Name: 2026 U.S. Senate Election: Democrats flip Republicans by March 31?
Start: 2025-12-04T01:23:08.258133Z
End: 2026-03-31T00:00:00Z

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This market will resolve to “Yes” if, between the Democratic Party and the Republican Party, the Democratic Party becomes the favorite in the "Which party will win the Senate in 2026?" market (https://polymarket.com/event/which-party-will-win-the-senate-in-2026?tid=1764796601244) for any four-hour period ending by March 31, 2026, 11:59 PM ET or earlier. Otherwise, this market will resolve to “No”.

The Democratic Party will be considered to have become the favorite for any four-hour period if it is ahead of the Republican Party in more individual minutes than the Republican Party is ahead of the Democratic Party during a qualifying time period.

A tie in the number of minutes will not qualify.

The resolution source will be the underlying minute-level price data for the “Which party will win the Senate in 2026?” market, which can be viewed using the bar chart on https://derivative.polymarket.com/index/2026-us-senate-election-democrats-flip-republicans-by or through the “Resolution” tab with the time set to show the four-hour window. Both interfaces display the same underlying data.

Note: This market will resolve according to the price scoring methodology of derivative.polymarket.com.

2026 U.S. Senate Election: Democrats flip Republicans by March 31?

This market will resolve to “Yes” if, between the Republican Party and the Democratic Party, the Republican Party becomes the favorite in the "Which party will win the House in 2026?" market (https://polymarket.com/event/which-party-will-win-the-house-in-2026?tid=1764045739181) for any four-hour period ending by March 31, 2026, 11:59 PM ET or earlier. Otherwise, this market will resolve to “No”.

The Republican Party will be considered to have become the favorite for any four-hour period if it is ahead of the Democratic Party in more individual minutes than the Democratic Party is ahead of the Republican Party during a qualifying time period.

A tie in the number of minutes will not qualify.

The resolution source will be the underlying minute-level price data for the “Which party will win the House in 2026?” market, which can be viewed using the bar chart on https://derivative.polymarket.com/index/will-the-republicans-flip-the-democrats-for-the-2026-us-house-elections-by or through the “Resolution” tab with the time set to show the four-hour window. Both interfaces display the same underlying data.

Note: This market will resolve according to the price scoring methodology of derivative.polymarket.com.

2026 U.S. House election: Republicans flip the Democrats by March 31?

This market will resolve to “Yes” if the “Yes” option for 'Republican Party' in the "Which party will win the House in 2026?" market  (https://polymarket.com/event/which-party-will-win-the-house-in-2026?) is priced over the listed value for any four-hour period ending by March 31, 2026, 11:59 PM ET or earlier. Otherwise, this market will resolve to “No”.

A tie in the number of minutes will not suffice.

The resolution source will be the underlying minute-level price data for 'Republican Party' in the "Which party will win the House in 2026?" market, which can be viewed using the bar chart on https://derivative.polymarket.com/index/2026-us-house-election-republican-odds-over-25-by-march-31-2 or through the “Resolution” tab with the time set to show the four-hour window. Both interfaces display the same underlying data.

Note: This market will resolve according to the price scoring methodology of derivative.polymarket.com.

2026 U.S. House Election: Republican Odds over 25% by March 31?

This market will resolve according to the party that controls the Senate following the 2026 U.S. Senate elections scheduled for November 3, 2026.

Senate control is defined as having more than half of the voting Senate members, or half of the voting Senate members and the Vice Presidency.

If the outcome of this election is ambiguous given the above rules, this market will remain open until the Majority Leader of the US Senate is selected following the 2026 US general election, at which point it will resolve to the party the majority leader is affiliated with at the time of their election to that position. If the elected majority leader does not caucus with any listed party this market will resolve “Other”.

Determination of which party controls the Senate after the 2026 US Senate elections will be based on a consensus of credible reporting, or if there is ambiguity, final federal and/or state election authority certification or other final official determination of the 2026 election results.

Will the Republican Party control the Senate after the 2026 Midterm elections?

The 2026 midterm elections for the US Senate is scheduled to be held on November 3, 2026. 

This market will resolve to "Yes" if Republicans hold fewer seats in the Senate for any state that Trump won in the 2024 US presidential election as a result of the 2026 midterm elections. Otherwise, this market will resolve to "No". 

Initial seat counts will be based on the composition of the US Senate as of November 2, 2026, 11:59PM ET.

This market's resolution will be solely based on the number of seats held by the Republican Party in the US Senate for any state won by Trump in the 2024 Presidential election. The loss of particular seat will not count towards a resolution for this market; only the total number of seats held by the Republican Party in a given state will be considered. (e.g. The loss of one of a state's seats by the Republican Party followed by the gain of the other seat would not be sufficient to resolve this market to "Yes".)

​​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 Senate elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the Senate elections are conclusively called by this market's resolution sources.

For the purposes of this market, states won by Trump in the 2024 Presidential election include Alabama, Alaska, Arizona, Arkansas, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Montana, Nebraska, Nevada, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, West Virginia, Wisconsin, and Wyoming. This list is determined by the winner of the electoral votes for each state in the 2024 Presidential election. In states such as Maine and Nebraska, where electoral votes are allocated separately by congressional districts as well as to the statewide winner, only the electoral votes allocated to the statewide winner are considered.

This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).

Will Republicans lose a seat in the US Senate for any state Trump won in 2024?

This market will resolve according to the result of the 2026 United States midterm elections.

A party will be considered to have 'control' of the House of Representatives, if they win a majority of voting seats.

A party will be considered to have 'control' of the Senate if they have more than half of the voting Senate members, or half of the voting Senate members and the Vice President.

A candidate's party is determined by their ballot-listed or otherwise identifiable affiliation with that party at the time the 2026 United States midterm elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican Parties will be considered a member of one of these parties based on the party that they most recently expressed their intent to caucus with at the time the 2026 United States midterm elections are conclusively called by this market's resolution sources.

If control of the House is ambiguous given the above rules, this market will resolve according to the party affiliation of the first Speaker of the US House who is selected following the 2026 United States midterm elections. 

If control of the Senate is ambiguous given the above rules, this market will resolve according to the party affiliation of the first Majority Leader of the US Senate who is selected following the 2026 United States midterm elections.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called winners of the House and Senate in the 2026 United States midterm elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.

2026 Balance of Power: R Senate, D House

This market will resolve according to the winner of the 2026 midterm Colorado U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Colorado Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Minnesota U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Minnesota Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Delaware U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Delaware Senate race in 2026?

The 2026 midterm elections for the US House of Representatives is scheduled to be held on November 3, 2026. 

This market will resolve to "Yes" if Republicans hold fewer seats in the House of Representatives for any state that Trump won in the 2024 US presidential election as a result of the 2026 midterm elections. Otherwise, this market will resolve to "No". 

Initial seat counts will be based on the composition of the US House of Representatives as of November 2, 2026, 11:59PM ET.

This market's resolution will be solely based on the number of seats held by the Republican Party in the US House of Representatives for any state won by Trump in the 2024 Presidential election. The loss of particular district seats will not count towards a resolution for this market; only the total number of seats held by the Republican Party in a given state will be considered. (e.g. The loss of a particular district's seat by the Republican Party followed by the gain of another district's seat would not be sufficient to resolve this market to "Yes".)

​​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.

For the purposes of this market, states won by Trump in the 2024 Presidential election include Alabama, Alaska, Arizona, Arkansas, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Montana, Nebraska, Nevada, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, West Virginia, Wisconsin, and Wyoming. This list is determined by the winner of the electoral votes for each state in the 2024 Presidential election. In states such as Maine and Nebraska, where electoral votes are allocated separately by congressional districts as well as to the statewide winner, only the electoral votes allocated to the statewide winner are considered.

This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).

Will Republicans lose a seat in the House of Representatives in any state Trump won in 2024?

This market will resolve according to the winner of the 2026 midterm Kentucky U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Kentucky Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm South Dakota U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the South Dakota Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Texas U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Texas Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Michigan U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Michigan Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Maine U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Maine Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Kansas U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Kansas Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Louisiana U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Louisiana Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Illinois U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Illinois Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Oregon U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Oregon Senate race in 2026?

This market will resolve based on the number of the following five elections won by the Democratic Party, all scheduled for November 4, 2025. Each event will count as one Democratic win if it occurs:

- Democrats win the Virginia Governor's elections
- Democrats win the Virginia House of Delegates
- Democrats win the New Jersey Governor elections
- Mamdani wins the New York City Mayor election
- California referendum "Proposition 50" passes

Any other elections occurring in November 2025 that are not explicitly listed here will have no bearing on this market’s outcome.

The primary resolution source for this market will be a consensus of credible reporting. In the event of ambiguity, the market will resolve according to official results published by the jurisdiction’s election authority.

This market will remain open until the official certified results of the listed elections are published. In the case of a tie, the winner determined by the jurisdiction’s official tiebreak mechanism will prevail.

Will Democrats win five elections in Nov?

This market will resolve according to the winner of the 2026 Ohio U.S. Senate special election currently scheduled for November 3, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Ohio Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Virginia U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Virginia Senate race in 2026?

This market will resolve according to the winner of the 2026 Florida U.S. Senate election special election currently scheduled for November 3, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Florida Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Arkansas U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Arkansas Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Tennessee U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Tennessee Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Nebraska U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Nebraska Senate race in 2026?

This market will resolve according to the party that controls the House of Representatives following the 2026 U.S. House elections scheduled for November 3, 2026.

House control is defined as having more than half of the voting members of the U.S. House of Representatives.

If the outcome of this election is ambiguous given the above rules, this market will remain open until the Speaker of the House is selected following the 2026 U.S. general election, at which point it will resolve to the party the Speaker is affiliated with at the time of their election to that position. If the elected Speaker does not caucus with any listed party this market will resolve “Other”.

Determination of which party controls the House after the 2026 U.S. House elections will be based on a consensus of credible reporting, or if there is ambiguity, final federal and/or state election authority certification or other final official determination of the 2026 election results.

Will the Democratic Party control the House after the 2026 Midterm elections?

This market will resolve according to the winner of the 2026 midterm Georgia U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the Georgia Senate race in 2026?

This market will resolve according to the election or referendum won by Democrats with the highest margin of victory compared to the other listed events, all scheduled for November 4, 2025:

- Virginia Governor election
- Virginia House of Delegates election
- New Jersey Governor election
- New York City Mayor election
- California referendum “Proposition 50”

If the results of any of these elections are not confirmed by July 31, 2026, this market will be resolved according to the results published thus far.

The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official election authority sources conducting the election.

Will the California Proposition 50 referendum have the largest Democratic margin of victory?

This market will resolve according to the candidate who wins the nomination for the Democratic Party to contest the UT-01 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Democratic primary will take place on June 23, 2026.

If no nominee is announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other".

The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/.

Any replacement of the nominee before election day will not change the resolution of the market.

Will Nate Blouin be the Democratic nominee for UT-01?

This market will resolve according to the winner of the 2026 midterm Wyoming U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Wyoming Senate race in 2026?

This market will resolve according to the winner of the Democratic Primary for United States Senator from Colorado.

If no 2026 Colorado Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Colorado Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will John Hickenlooper be the Democratic nominee for Senate in Colorado?

This market will resolve to “Yes” if the named individual wins and accepts the 2028 nomination of the Democratic Party for U.S. president. Otherwise, this market will resolve to “No”.

The resolution source for this market will be a consensus of official Democratic Party sources.

Any replacement of the democratic nominee before election day will not change the resolution of the market.

Will Gavin Newsom win the 2028 Democratic presidential nomination?

This market will resolve to “Yes” if the “Yes” option for 'Gavin Newsom' in the "Democratic Presidential Nominee 2028" market  (https://polymarket.com/event/democratic-presidential-nominee-2028?tid=1764680585562) is priced over the listed value for a majority of minutes during any four-hour period ending by December 31, 2025, 11:59 PM ET or earlier. Otherwise, this market will resolve to “No”.

A tie in the number of minutes will resolve to "No".

If the underlying market resolves prior to this market, this market will immediately resolve in accordance with the underlying market’s final outcome.

The resolution source will be the underlying minute-level price data for the “Democratic Presidential Nominee 2028” market, which can be viewed using the bar chart on https://derivative.polymarket.com/index/odds-of-newsom-dem-pres-nominee-over-45-by-december-31 or through the “Resolution” tab with the time set to show the four-hour window. Both interfaces display the same underlying data.

Note: This market will resolve according to the price scoring methodology of derivative.polymarket.com.


Odds of Newsom Dem Pres Nominee over 45% by December 31?

This market will resolve according to the winner of the 2026 midterm Oklahoma U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Oklahoma Senate race in 2026?

This market will resolve according to the winner of the Democratic Primary for United States Senator from Texas.

If no 2026 Texas Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Texas Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Jasmine Crockett be the Democratic nominee for Senate in Texas?

This market will resolve according to the winner of the 2026 midterm Idaho U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Idaho Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm West Virginia U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the West Virginia Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Alabama U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Alabama Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Montana U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Montana Senate race in 2026?

This market will resolve according to the winner of the Democratic Primary for United States Senator from Minnesota.

If no 2026 Minnesota Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Minnesota Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Peggy Flanagan be the Democratic nominee for Senate in Minnesota?

This market will resolve according to the winner of the Democratic Primary for United States Senator from Maine.

If no 2026 Maine Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Maine Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Graham Platner be the Democratic nominee for Senate in Maine?

This market will resolve according to the winner of the 2026 midterm Mississippi U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Mississippi Senate race in 2026?

This market will resolve according to the winner of the Democratic Primary for United States Senator from Kentucky.

If no 2026 Kentucky Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Kentucky Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Joel Willett be the Democratic nominee for Senate in Kentucky?

This market will resolve according to the winner of the 2026 midterm North Carolina U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Democrats win the North Carolina Senate race in 2026?

This market will resolve according to the winner of the 2026 midterm Iowa U.S. Senate election, inclusive of any run-offs.

A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.

Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.

The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.

Will the Republicans win the Iowa Senate race in 2026?

This market will resolve according to the winner of the Democratic Primary for United States Senator from Massachusetts.

If no 2026 Massachusetts Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Massachusetts Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Seth Moulton be the Democratic nominee for Senate in Massachusetts?

This market will resolve according to the winner of the Republican Primary for United States Senator from Colorado.

If no 2026 Colorado Republican Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the Colorado Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Janak Joshi be the Republican nominee for Senate in Colorado?

This market will resolve according to the party of the candidate who wins the CA-27 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026.

If no winner is announced by November 4, 2026, 11:59PM ET, this market will resolve to "Other".

​​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.

This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).

Will the Democratic Party win the CA-27 House seat?

This market will resolve according to the winner of the Democratic Primary for United States Senator from South Carolina.

If no 2026 South Carolina Democratic Senate Primary takes place, this market will resolve to "Other".

The resolution source for this market will be the first announcement of the results from the South Carolina Democratic party, however an overwhelming consensus of credible reporting may suffice.

2026 U.S. Senate Election: Democrats flip Republicans by March 31?

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Market Context

2026 U.S. Senate Election: Democrats flip Republicans by March 31?

Rules

2026 U.S. Senate Election: Democrats flip Republicans by March 31?

Order Book

Market Context

2026 U.S. Senate Election: Democrats flip Republicans by March 31?

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