Lori Trahan secured the Democratic nomination for Massachusetts' 3rd congressional district without opposition in the September 1 primary, while Republican Gary Grossi advanced unopposed on the same ballot. The district carries a Cook Partisan Voter Index of D+11 and has remained under continuous Democratic control for decades, producing consistent double-digit margins in recent cycles. All major nonpartisan rating firms classify the seat as Solid or Safe Democratic ahead of the November 3 general election. Trader consensus at 95.7% for the Democratic nominee aligns with these structural factors and the absence of competitive fundraising or polling signals favoring the Republican. Late developments such as an unforeseen scandal, major health event, or sharp national partisan realignment could theoretically narrow the gap, though historical patterns in this district indicate limited scope for such shifts within the remaining campaign window.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMA-03 House Election Winner
MA-03 House Election Winner
$23,313 Vol.
$23,313 Vol.
Nov 2, 2026
Democratic Party
96%
Republican Party
3%
$23,313 Vol.
$23,313 Vol.
Nov 2, 2026
Democratic Party
$11,843 Vol.
96%
Republican Party
$11,470 Vol.
3%
This market will resolve according to the party of the candidate who wins the MA-03 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 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/).Lori Trahan secured the Democratic nomination for Massachusetts' 3rd congressional district without opposition in the September 1 primary, while Republican Gary Grossi advanced unopposed on the same ballot. The district carries a Cook Partisan Voter Index of D+11 and has remained under continuous Democratic control for decades, producing consistent double-digit margins in recent cycles. All major nonpartisan rating firms classify the seat as Solid or Safe Democratic ahead of the November 3 general election. Trader consensus at 95.7% for the Democratic nominee aligns with these structural factors and the absence of competitive fundraising or polling signals favoring the Republican. Late developments such as an unforeseen scandal, major health event, or sharp national partisan realignment could theoretically narrow the gap, though historical patterns in this district indicate limited scope for such shifts within the remaining campaign window.
This market will resolve according to the party of the candidate who wins the MA-03 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 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, 11:09 AM ET
Volume
$23,313End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 11:09 AM ETResolver
0x2F5e3684c...This market will resolve according to the party of the candidate who wins the MA-03 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 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/).Lori Trahan secured the Democratic nomination for Massachusetts' 3rd congressional district without opposition in the September 1 primary, while Republican Gary Grossi advanced unopposed on the same ballot. The district carries a Cook Partisan Voter Index of D+11 and has remained under continuous Democratic control for decades, producing consistent double-digit margins in recent cycles. All major nonpartisan rating firms classify the seat as Solid or Safe Democratic ahead of the November 3 general election. Trader consensus at 95.7% for the Democratic nominee aligns with these structural factors and the absence of competitive fundraising or polling signals favoring the Republican. Late developments such as an unforeseen scandal, major health event, or sharp national partisan realignment could theoretically narrow the gap, though historical patterns in this district indicate limited scope for such shifts within the remaining campaign window.
This market will resolve according to the party of the candidate who wins the MA-03 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 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
$23,313End Date
Nov 3, 2026Market Opened
Jan 28, 2026, 11:09 AM ETResolver
0x2F5e3684c...Lori Trahan secured the Democratic nomination for Massachusetts' 3rd congressional district without opposition in the September 1 primary, while Republican Gary Grossi advanced unopposed on the same ballot. The district carries a Cook Partisan Voter Index of D+11 and has remained under continuous Democratic control for decades, producing consistent double-digit margins in recent cycles. All major nonpartisan rating firms classify the seat as Solid or Safe Democratic ahead of the November 3 general election. Trader consensus at 95.7% for the Democratic nominee aligns with these structural factors and the absence of competitive fundraising or polling signals favoring the Republican. Late developments such as an unforeseen scandal, major health event, or sharp national partisan realignment could theoretically narrow the gap, though historical patterns in this district indicate limited scope for such shifts within the remaining campaign window.
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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