Incumbent Democrat Frank Mrvan’s strong position in Indiana’s 1st congressional district stems from the seat’s D+1 Partisan Voter Index, its consistent Democratic voting patterns in recent cycles, and Mrvan’s decisive primary win over challenger LaVetta Sparks-Wade. Republican nominee Barb Regnitz emerged from her primary but faces structural headwinds in a district that has not elected a Republican to the House in nearly a century. Nonpartisan ratings classify the race as likely Democratic, aligning with trader consensus that assigns the Democratic Party a 93.5 percent implied probability. Late developments capable of narrowing the gap would include a broad national Republican surge, an unforeseen scandal, or sharply higher Republican turnout in the November 3, 2026 general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedIN-01 House Election Winner
IN-01 House Election Winner
NEW
NEW
Nov 3, 2026
Democratic Party
94%
Republican Party
3%
NEW
NEW
Nov 3, 2026
Democratic Party
$3,021 Vol.
94%
Republican Party
$3,935 Vol.
3%
This market will resolve according to the party of the candidate who wins the IN-01 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/).Incumbent Democrat Frank Mrvan’s strong position in Indiana’s 1st congressional district stems from the seat’s D+1 Partisan Voter Index, its consistent Democratic voting patterns in recent cycles, and Mrvan’s decisive primary win over challenger LaVetta Sparks-Wade. Republican nominee Barb Regnitz emerged from her primary but faces structural headwinds in a district that has not elected a Republican to the House in nearly a century. Nonpartisan ratings classify the race as likely Democratic, aligning with trader consensus that assigns the Democratic Party a 93.5 percent implied probability. Late developments capable of narrowing the gap would include a broad national Republican surge, an unforeseen scandal, or sharply higher Republican turnout in the November 3, 2026 general election.
This market will resolve according to the party of the candidate who wins the IN-01 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: Dec 16, 2025, 11:52 AM ET
Volume
$6,955End Date
Nov 4, 2026Market Opened
Dec 16, 2025, 11:52 AM ETResolver
0x2F5e3684c...This market will resolve according to the party of the candidate who wins the IN-01 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/).Incumbent Democrat Frank Mrvan’s strong position in Indiana’s 1st congressional district stems from the seat’s D+1 Partisan Voter Index, its consistent Democratic voting patterns in recent cycles, and Mrvan’s decisive primary win over challenger LaVetta Sparks-Wade. Republican nominee Barb Regnitz emerged from her primary but faces structural headwinds in a district that has not elected a Republican to the House in nearly a century. Nonpartisan ratings classify the race as likely Democratic, aligning with trader consensus that assigns the Democratic Party a 93.5 percent implied probability. Late developments capable of narrowing the gap would include a broad national Republican surge, an unforeseen scandal, or sharply higher Republican turnout in the November 3, 2026 general election.
This market will resolve according to the party of the candidate who wins the IN-01 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
$6,955End Date
Nov 4, 2026Market Opened
Dec 16, 2025, 11:52 AM ETResolver
0x2F5e3684c...Incumbent Democrat Frank Mrvan’s strong position in Indiana’s 1st congressional district stems from the seat’s D+1 Partisan Voter Index, its consistent Democratic voting patterns in recent cycles, and Mrvan’s decisive primary win over challenger LaVetta Sparks-Wade. Republican nominee Barb Regnitz emerged from her primary but faces structural headwinds in a district that has not elected a Republican to the House in nearly a century. Nonpartisan ratings classify the race as likely Democratic, aligning with trader consensus that assigns the Democratic Party a 93.5 percent implied probability. Late developments capable of narrowing the gap would include a broad national Republican surge, an unforeseen scandal, or sharply higher Republican turnout in the November 3, 2026 general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions