Indiana's 4th Congressional District, with its R+15 partisan voter index and consistent Republican dominance, underpins trader consensus pricing a 91% implied probability for a Republican House election winner, reinforced by incumbent Jim Baird's strong position seeking a fifth term after his 65% victory in 2024. Recent developments include the May 5 primary field solidifying, where Trump-endorsed Baird leads in fundraising over GOP challengers State Rep. Craig Haggard and John Piper, while Democrats contend with a crowded primary of eight candidates likely diluting resources and producing a weaker nominee. Though structural advantages loom large, an upset in the Republican primary yielding a vulnerable general election candidate, a standout Democratic consolidator post-primary, or a national midterm wave favoring Democrats could narrow the gap before the November 3 contest.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedIN-04 House Election Winner
IN-04 House Election Winner
Republican Party
91%
Democratic Party
9%
Republican Party
91%
Democratic Party
9%
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
Resolver
0x2F5e3684c...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/).
Resolver
0x2F5e3684c...Indiana's 4th Congressional District, with its R+15 partisan voter index and consistent Republican dominance, underpins trader consensus pricing a 91% implied probability for a Republican House election winner, reinforced by incumbent Jim Baird's strong position seeking a fifth term after his 65% victory in 2024. Recent developments include the May 5 primary field solidifying, where Trump-endorsed Baird leads in fundraising over GOP challengers State Rep. Craig Haggard and John Piper, while Democrats contend with a crowded primary of eight candidates likely diluting resources and producing a weaker nominee. Though structural advantages loom large, an upset in the Republican primary yielding a vulnerable general election candidate, a standout Democratic consolidator post-primary, or a national midterm wave favoring Democrats could narrow the gap before the November 3 contest.
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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