Name: Which Senators will vote to confirm RFK Jr.?
Start: 2025-01-14T20:27:27.136379Z
End: 2025-12-31T12:00:00Z

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This is a market on predicting which Senators will vote to confirm Robert F. Kennedy Jr.

This market will resolve to “Yes” if Bernie Sanders votes to confirm Robert F. Kennedy Jr. as Secretary of Health and Human Services (HHS) by June 30, 2025, 11:59 PM. Otherwise, this market will resolve to "No".

This market will resolve based on the first confirmation vote for Robert F. Kennedy Jr. as Secretary of HHS. If Kennedy's nomination is withdrawn or if the Senate rejects his nomination, this market will immediately resolve to “No”.

Announcements from Bernie Sanders that he will vote for Kennedy will not qualify. Only an affirmative vote will count.

The primary resolution source will be official information from the U.S. Senate, however a consensus of credible reporting may also be used.

Bernie Sanders

This market will resolve to "Yes" if Bill Cassidy votes to confirm Robert Kennedy Jr. in the first roll-call vote over his confirmation as Secretary of Health and Human Services. Otherwise this market will resolve to “No”.

If another individual is confirmed as Secretary of Health and Human Services for President Donald Trump, this market will resolve to “No”.

If Robert Kennedy Jr. is appointed through a recess appointment, or is otherwise officially made the Secretary of Health and Human Services without a Senate vote, this market will resolve to “No”.

If no vote occurs before December 31, 2025, 11:59 PM ET, this market will resolve to "No."

The resolution source for this market will be the official vote count published on the U.S. Senate website, however a consensus of credible reporting may also be used.

Bill Cassidy

This market will resolve to "Yes" if Mitch McConnell votes to confirm Robert Kennedy Jr. in the first roll-call vote over his confirmation as Secretary of Health and Human Services. Otherwise this market will resolve to “No”.

If another individual is confirmed as Secretary of Health and Human Services for President Donald Trump, this market will resolve to “No”.

If Robert Kennedy Jr. is appointed through a recess appointment, or is otherwise officially made the Secretary of Health and Human Services without a Senate vote, this market will resolve to “No”.

If no vote occurs before December 31, 2025, 11:59 PM ET, this market will resolve to "No."

The resolution source for this market will be the official vote count published on the U.S. Senate website, however a consensus of credible reporting may also be used.


Mitch McConnell

This market will resolve to "Yes" if John Curtis votes to confirm Robert Kennedy Jr. in the first roll-call vote over his confirmation as Secretary of Health and Human Services. Otherwise this market will resolve to “No”.

If another individual is confirmed as Secretary of Health and Human Services for President Donald Trump, this market will resolve to “No”.

If Robert Kennedy Jr. is appointed through a recess appointment, or is otherwise officially made the Secretary of Health and Human Services without a Senate vote, this market will resolve to “No”.

If no vote occurs before December 31, 2025, 11:59 PM ET, this market will resolve to "No."

The resolution source for this market will be the official vote count published on the U.S. Senate website, however a consensus of credible reporting may also be used.

John Curtis

This market will resolve to "Yes" if Susan Collins votes to confirm Robert Kennedy Jr. in the first roll-call vote over his confirmation as Secretary of Health and Human Services. Otherwise this market will resolve to “No”.

If another individual is confirmed as Secretary of Health and Human Services for President Donald Trump, this market will resolve to “No”.

If Robert Kennedy Jr. is appointed through a recess appointment, or is otherwise officially made the Secretary of Health and Human Services without a Senate vote, this market will resolve to “No”.

If no vote occurs before December 31, 2025, 11:59 PM ET, this market will resolve to "No."

The resolution source for this market will be the official vote count published on the U.S. Senate website, however a consensus of credible reporting may also be used.

Susan Collins

This market will resolve to "Yes" if John Fetterman votes to confirm Robert Kennedy Jr. in the first roll-call vote over his confirmation as Secretary of Health and Human Services. Otherwise this market will resolve to “No”.

If another individual is confirmed as Secretary of Health and Human Services for President Donald Trump, this market will resolve to “No”.

If Robert Kennedy Jr. is appointed through a recess appointment, or is otherwise officially made the Secretary of Health and Human Services without a Senate vote, this market will resolve to “No”.

If no vote occurs before December 31, 2025, 11:59 PM ET, this market will resolve to "No."

The resolution source for this market will be the official vote count published on the U.S. Senate website, however a consensus of credible reporting may also be used.

John Fetterman

This market will resolve to "Yes" if Lisa Murkowski votes to confirm Robert Kennedy Jr. in the first roll-call vote over his confirmation as Secretary of Health and Human Services. Otherwise this market will resolve to “No”.

If another individual is confirmed as Secretary of Health and Human Services for President Donald Trump, this market will resolve to “No”.

If Robert Kennedy Jr. is appointed through a recess appointment, or is otherwise officially made the Secretary of Health and Human Services without a Senate vote, this market will resolve to “No”.

If no vote occurs before December 31, 2025, 11:59 PM ET, this market will resolve to "No."

The resolution source for this market will be the official vote count published on the U.S. Senate website, however a consensus of credible reporting may also be used.

Lisa Murkowski 

Which Senators will vote to confirm RFK Jr.?

This market will resolve to "Yes" if Robert F. Kennedy Jr. (RFK Jr.) announces that he will resign from his position as United States Secretary of Health and Human Services (HHS), or otherwise ceases to be HHS Secretary for any length of time, between September 5, and December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No".

Note that an announcement of his resignation before the resolution date will suffice to resolve this market to "Yes" regardless of if/when he actually steps down.

The primary resolution source for this market will be official information from the Government of the United States of America or official statements by RFK Jr. or his representative, however a consensus of credible reporting will suffice.

RFK Jr. Out by December 31?

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

If no 2026 Kentucky 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 Kentucky Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Andy Barr be the Republican nominee for Senate in Kentucky?

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 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 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 Republican Primary for United States Senator from Rhode island.

If no 2026 Rhode Island 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 Rhode Island Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Raymond McKay be the Republican nominee for Senate in Rhode Island?

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

If no 2026 Kansas 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 Kansas Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Mike Soetaert be the Democratic nominee for Senate in Kansas?

Will Christy Davis be the Democratic nominee for Senate in Kansas?

This market will resolve according to the candidate Bernie Sanders announces that he will vote for or endorses for the listed election.

If Bernie Sanders does not announce an endorsement by the day before the scheduled election at 11:59 PM ET, this market will resolve to "No".

The resolution source for this market will be official information from Bernie Sanders or one of his representatives, or a consensus of credible reporting of Bernie Sanders' endorsement.

Will Bernie endorse Antonio Delgado for NY-Gov by Nov 2 2026 ET?

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 Democratic Primary for United States Senator from Arkansas.

If no 2026 Arkansas 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 Arkansas Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Hallie Shoffner be the Democratic nominee for Senate in Arkansas?

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

If no 2026 Rhode Island 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 Rhode Island Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Jack Reed be the Democratic nominee for Senate in Rhode Island?

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

If no 2026 Virginia 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 Virginia Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Bryce Reeves be the Republican nominee for Senate in Virginia?

This market will resolve to "Yes" if any vaccine has its Biologics License Application (BLA) approval or Emergency Use Authorization (EUA) revoked by the FDA or is voluntarily withdrawn for reasons related to health, safety, or efficacy by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to “No”. 

Withdrawing approval solely due to seasonality, low demand, or an emergency ending will not be sufficient for a "Yes" resolution. Similarly, a reduction in the scope of approved recipients, without fully eliminating the approval will not be sufficient for a "Yes" resolution."

The resolution source will be official FDA announcements and guidance published on the FDA website (see: https://www.cdc.gov/acip-recs/hcp/vaccine-specific/).

Will RFK end any vaccine approvals by December 31?

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

If no 2026 West Virginia 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 West Virginia Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Shelley Moore Capito be the Republican nominee for Senate in West Virginia?

The 2026 U.S. general elections for Congress are scheduled to be held on November 3, 2026.

This market will resolve according to the total number of Republican members of the U.S. Senate who are considered to be retiring or not seeking reelection in 2026.

For the purposes of this market, a member may be considered not to seek reelection if:
• They publicly announce they are retiring from Congress and will not run for reelection to their current seat
• They choose to run for a different elected office in 2026 instead of running for reelection to their current seat
• They do not seek their party’s nomination for reelection to their current seat, meaning they neither file for reelection nor participate in their party’s nominating process (such as a primary, convention, or caucus)

Only members whose current term is scheduled to end with the 2026 regular election for the Senate may qualify for this market.

This market will not resolve until after the relevant final 2026 candidate filing deadline has passed in all states, which is expected to occur in late August 2026.

The resolution source for this market will be a consensus of credible reporting.

Will the number of Republican Senate members who retire in 2026 be less than 5?

This market will resolve according to the candidate who receives the second-most votes in the first round of the Republican Primary for United States Senator from Texas, which is scheduled to take place on March 3, 2026. 

If no 2026 Texas 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 Texas Republican party, however an overwhelming consensus of credible reporting may suffice.

Will John Cornyn come in 2nd in the 2026 Texas Republican Primary?

This market will resolve to "Yes" if the US Senate passes a motion to invoke cloture and end debate on any part of the legislative process, with such a cloture motion receiving Yea votes from fewer than three-fifths of the Senators by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve "No".

Confirmations are considered part of the Senate’s “advice and consent” function, not part of the Senate’s “legislative process,” and will therefore not count towards this market's resolution.

The resolution source for this market will be official information from the U.S. government.

GOP uses 'Nuclear Option' to break filibuster by March 31, 2026?

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

If no 2026 Texas 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 Texas Republican party, however an overwhelming consensus of credible reporting may suffice.


Will Ken Paxton win the 2026 Texas Republican Primary?

This market will resolve to “Yes” if the “Yes” option for 'Republican Party' in the "Which party will win the Senate in 2026?" market  (https://polymarket.com/event/which-party-will-win-the-senate-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 Senate in 2026?" market, which can be viewed using the bar chart on https://derivative.polymarket.com/index/2026-us-senate-election-republican-odds-over-70-by-march-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.

2026 U.S. Senate Election: Republican Odds over 70% by March 31?

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

If no 2026 Alabama 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 Alabama Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Barry Moore be the Republican nominee for Senate in Alabama?

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

If no 2026 South Carolina 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 South Carolina Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Lindsey Graham be the Republican nominee for Senate in South Carolina?

This market will resolve to "Yes" if the Trump Administration (including any federal court) publicly releases previously unreleased files pertaining to the illegal activities of Jeffrey Epstein which contain any mention of the listed individual between November 18 and December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No".

Only previously unreleased files which contain novel material not previously available to the public will qualify. Documents that are merely re-released, have had redactions removed, repackaged, or newly publicized versions of already available information do not qualify.

Any mention of the listed individual in connection with Jeffrey Epstein will qualify, regardless of if connected to nefarious or illegal activities.

Previously unreleased files is inclusive of any written, audio, photo or video documentation (e.g., qualifying photos which depict the listed individual will count).

The primary resolution source for this market will be a consensus of credible reporting.

Will Ehud Barak be named in newly released Epstein files?

This market will resolve according to the next individual Donald Trump, as President of the United States, formally nominates to be Chair of the Federal Reserve by December 31, 2026, 11:59 PM ET. 

Formal nominations are defined as the submission of a nomination message to the U.S. Senate.

Acting or interim appointments will not count unless the individual is formally nominated to be Chair of the Federal Reserve by submission of a nomination message to the U.S. Senate.

The primary resolution source for this market will be official information from the U.S. Senate (see: https://www.senate.gov/legislative/nominations_new.htm), however a consensus of credible reporting may also be used.

Will Trump nominate Kevin Hassett as the next Fed chair?

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 candidate who receives the third-most votes in the first round of the Republican Primary for United States Senator from Texas, which is scheduled to take place on March 3, 2026. 

If no 2026 Texas 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 Texas Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Wesley Hunt come in 3rd in the 2026 Texas Republican Primary?

This market will resolve to “Yes” if the Trump administration announces a new nominee for Chair of the Federal Reserve by the listed date, 11:59 PM ET. Otherwise, this market will resolve to “No”.

An announcement within this market’s timeframe from Donald Trump or the Trump administration stating their intent to nominate a specific individual for Chair of the Federal Reserve will suffice to resolve this market, regardless of whether a formal nomination actually occurs. 

Qualifying announcements must explicitly present the relevant individual as the nominee or future nominee for Chair of the Federal Reserve. Announcements of acting or interim appointments, or announcements which merely reveal potential candidates, will not qualify. Media reports, speculation, or other unofficial information will not qualify.

A formal presidential nomination of an individual to be Chair of the Federal Reserve, made before the listed date, 11:59 PM ET, will immediately resolve this market to “Yes”. Formal nominations are defined as the submission of a nomination message to the U.S. Senate.

The resolution sources for this market will be official announcements from Donald Trump or the Trump administration and official information from the U.S. Senate.

Will Donald Trump announce a new nominee for Chair of the Federal Reserve by March 31, 2026?

This market will resolve according to the candidate who wins the nomination for the Republican Party to contest the KY-04 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The Republican primary will take place on May 19, 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 Republican sources, including https://www.rnc.org/.

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

Will Thomas Massie be the Republican nominee for KY-04?

This market will resolve to “Yes” if, by April 30, 2026, 11:59 PM ET, any sitting member of the United States Congress resigns or is removed from their congressional seat and the cause of their departure is attributed to information contained in files related to Jeffrey Epstein released by the federal government during this market’s timeframe. Otherwise, this market will resolve to “No.”

A qualifying resignation or removal must be caused by information included in newly released Epstein-related files. The cause of resignation or removal may be established through official statements from the departing Member of Congress or through a clear consensus of credible reporting. Resignations or removals driven by information already public before November 18, 2025, or by reasons unrelated to the content of the released Epstein-related files, will not qualify.

An announcement of resignation or removal made before April 30, 2026, 11:59 PM ET will qualify, even if the departure becomes effective afterward.

Only the resignation of a U.S. representative or Senator will count. The resignation or removal of a delegate to congress who does not hold full voting powers, e.g. Stacey Plaskett, will not count.

The resolution sources for this market will be official statements from the departing Member of Congress and a consensus of credible reporting.

U.S. Congress member out over Epstein files by April 30?

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 to "Yes" if the CDC has completely ended its recommendation for the listed vaccine, meaning it no longer recommends it for any category of individuals by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to “No”.

A reduction in the scope of recommended recipients, or the removal of a recommendation for a specific type of vaccine for the listed disease (e.g. CDC removal of the recommendation for the live oral polio vaccine in 2022) without fully eliminating the recommendation will not be sufficient for a "Yes" resolution.

The resolution source will be official CDC announcements and guidance published on the CDC website (see: https://www.cdc.gov/acip-recs/hcp/vaccine-specific/).

Will RFK end Influenza vaccine recommendation in 2025?

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

If no 2026 Illinois 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 Illinois Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Don Tracy be the Republican nominee for Senate in Illinois?

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?

This market will resolve to "Yes" if John Fetterman announces that he will resign from his position as  United States senator from Pennsylvania, or otherwise ceases to be Senator for any length of time, between May 6, and December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No".

Note that an announcement of his resignation before the resolution date will suffice to resolve this market to "Yes" regardless of if/when he actually steps down.

The primary resolution source for this market will be official information from the Government of the United States of America or official statements by Fetterman or his representative, however a consensus of credible reporting will suffice.

Fetterman out in 2025?

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

If no 2026 Florida 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 Florida Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Ashley B. Moody be the Republican nominee for Senate in Florida?

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

If no 2026 Virginia 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 Virginia Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Mark Warner be the Democratic nominee for Senate in Virginia?

This market will resolve to "Yes" if John Fetterman announces he is resigning as a US Senator from Pennsylvania or otherwise ceases to be a US Senator from Pennsylvania for any length of time between November 14, 2025 and December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

If John Fetterman announces he is resigning but remains in office to a point outside this market's timeframe, the announcement will still qualify for an immediate "Yes" resolution.

The primary resolution source for this market will be information from John Fetterman or the government of the US, however a consensus of credible reporting will also be used.

Fetterman out before 2027?

This market will resolve based on whether Donald Trump announces that he will vote for or endorse the listed candidate in the election named in the title.

If Donald Trump does not announce an endorsement by the day before the scheduled election at 11:59 PM ET, this market will resolve to "No".

The resolution source for this market will be official information from Donald Trump or one of his representatives, or a consensus of credible reporting of Donald Trump's endorsement.

Will Trump endorse Andy Barr for KY-Sen by Nov 2 2026 ET?

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 Republican Primary for United States Senator from Iowa.

If no 2026 Iowa 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 Iowa Republican party, however an overwhelming consensus of credible reporting may suffice.

Will Ashley Hinson be the Republican nominee for Senate in Iowa?

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 according to the winner of the Democratic Primary for United States Senator from Delaware.

If no 2026 Delaware 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 Delaware Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Chris Coons be the Democratic nominee for Senate in Delaware?

This market will resolve to "Yes" if at least one seat on the United States Supreme Court becomes vacant between January 1 and December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

The primary resolution source for this market will be official announcements from the U.S. Government. However, a consensus of credible reporting may also be used.  

Supreme Court vacancy in 2026?

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 winner of the Democratic Primary for United States Senator from New Jersey.

If no 2026 New Jersey 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 New Jersey Democratic party, however an overwhelming consensus of credible reporting may suffice.

Will Cory Booker be the Democratic nominee for Senate in New Jersey?

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

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

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

Will J.D. Vance win the 2028 Republican presidential nomination?

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

If no 2026 West Virginia 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 West Virginia Democratic Party, however an overwhelming consensus of credible reporting may suffice.

Will Zachary Shrewsbury be the Democratic nominee for Senate in West Virginia?

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

If no 2026 New Hampshire 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 New Hampshire Republican party, however an overwhelming consensus of credible reporting may suffice.

Will John E. Sununu be the Republican nominee for Senate in New Hampshire?

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.

Which Senators will vote to confirm RFK Jr.?

Mitch McConnell
$158,812 Vol.
No

Bernie Sanders
$1,001,426 Vol.
No

Lisa Murkowski
$73,902 Vol.
Yes

John Fetterman
$773,968 Vol.
No

John Curtis
$42,948 Vol.
Yes

Susan Collins
$52,562 Vol.
Yes

Bill Cassidy
$120,863 Vol.
Yes

Market Context

Which Senators will vote to confirm RFK Jr.?

Rules

Which Senators will vote to confirm RFK Jr.?

Market Context

Which Senators will vote to confirm RFK Jr.?

About

Related

Which Senators will vote to confirm RFK Jr.?

Mitch McConnell$158,812 Vol.Nocircle xmark

Bernie Sanders$1,001,426 Vol.Nocircle xmark

Lisa Murkowski $73,902 Vol.Yescircle check

John Fetterman$773,968 Vol.Nocircle xmark

John Curtis$42,948 Vol.Yescircle check

Susan Collins$52,562 Vol.Yescircle check

Bill Cassidy$120,863 Vol.Yescircle check

Market Context

Which Senators will vote to confirm RFK Jr.?

Rules

Which Senators will vote to confirm RFK Jr.?

Market Context

Which Senators will vote to confirm RFK Jr.?

About

Related

Mitch McConnell
$158,812 Vol.
No

Bernie Sanders
$1,001,426 Vol.
No

Lisa Murkowski
$73,902 Vol.
Yes

John Fetterman
$773,968 Vol.
No

John Curtis
$42,948 Vol.
Yes

Susan Collins
$52,562 Vol.
Yes

Bill Cassidy
$120,863 Vol.
Yes