Incumbent Democrat Zoe Lofgren's entrenched position in California's solidly Democratic 18th Congressional District, encompassing Silicon Valley strongholds like San Jose, underpins trader consensus pricing a Democratic victory at 91.5% ahead of the June 2 top-two primary. Lofgren, a long-serving representative and chair of the California Democratic Congressional Delegation, boasts superior fundraising exceeding $1.8 million and faces only fragmented challengers, including newcomers Luis Arreguin, Chris Demers, and Shane Lewis, with no credible Republican emerging from a divided GOP field. No major developments have shifted odds in the past 30 days, reflecting the district's partisan lean and incumbency advantages. A Republican upset would require a surprise top-two qualifier, Lofgren health issues at age 77, or a national GOP wave, though barriers remain high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCA-18 House Election Winner
CA-18 House Election Winner
$32,552 Vol.
$32,552 Vol.
Nov 3, 2026
Democratic Party
92%
Republican Party
6%
$32,552 Vol.
$32,552 Vol.
Nov 3, 2026
Democratic Party
$16,650 Vol.
92%
Republican Party
$15,902 Vol.
6%
This market will resolve according to the party of the candidate who wins the CA-18 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.
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/).Incumbent Democrat Zoe Lofgren's entrenched position in California's solidly Democratic 18th Congressional District, encompassing Silicon Valley strongholds like San Jose, underpins trader consensus pricing a Democratic victory at 91.5% ahead of the June 2 top-two primary. Lofgren, a long-serving representative and chair of the California Democratic Congressional Delegation, boasts superior fundraising exceeding $1.8 million and faces only fragmented challengers, including newcomers Luis Arreguin, Chris Demers, and Shane Lewis, with no credible Republican emerging from a divided GOP field. No major developments have shifted odds in the past 30 days, reflecting the district's partisan lean and incumbency advantages. A Republican upset would require a surprise top-two qualifier, Lofgren health issues at age 77, or a national GOP wave, though barriers remain high.
This market will resolve according to the party of the candidate who wins the CA-18 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.
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/).
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/).
Market Opened: Jan 28, 2026, 12:08 AM ET
Volume
$32,552End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 12:08 AM ETResolver
0x2F5e3684c...This market will resolve according to the party of the candidate who wins the CA-18 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.
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/).Incumbent Democrat Zoe Lofgren's entrenched position in California's solidly Democratic 18th Congressional District, encompassing Silicon Valley strongholds like San Jose, underpins trader consensus pricing a Democratic victory at 91.5% ahead of the June 2 top-two primary. Lofgren, a long-serving representative and chair of the California Democratic Congressional Delegation, boasts superior fundraising exceeding $1.8 million and faces only fragmented challengers, including newcomers Luis Arreguin, Chris Demers, and Shane Lewis, with no credible Republican emerging from a divided GOP field. No major developments have shifted odds in the past 30 days, reflecting the district's partisan lean and incumbency advantages. A Republican upset would require a surprise top-two qualifier, Lofgren health issues at age 77, or a national GOP wave, though barriers remain high.
This market will resolve according to the party of the candidate who wins the CA-18 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.
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/).
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/).
Volume
$32,552End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 12:08 AM ETResolver
0x2F5e3684c...Incumbent Democrat Zoe Lofgren's entrenched position in California's solidly Democratic 18th Congressional District, encompassing Silicon Valley strongholds like San Jose, underpins trader consensus pricing a Democratic victory at 91.5% ahead of the June 2 top-two primary. Lofgren, a long-serving representative and chair of the California Democratic Congressional Delegation, boasts superior fundraising exceeding $1.8 million and faces only fragmented challengers, including newcomers Luis Arreguin, Chris Demers, and Shane Lewis, with no credible Republican emerging from a divided GOP field. No major developments have shifted odds in the past 30 days, reflecting the district's partisan lean and incumbency advantages. A Republican upset would require a surprise top-two qualifier, Lofgren health issues at age 77, or a national GOP wave, though barriers remain high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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