Incumbent Rep. Jim Himes (D) commands trader consensus at 92.5% implied probability to retain Connecticut's 4th Congressional District, a solidly Democratic seat with a D+13 Cook Partisan Voting Index, reflecting his unchallenged dominance since 2009 and consistent double-digit reelection margins amid weak Republican opposition. No high-profile GOP challenger has emerged ahead of the June 9 filing deadline, reinforcing the district's blue Fairfield County base favoring Democrats in general elections. Recent constituent protests over Himes' FISA stance last week drew minor attention but failed to dent his position. Realistic challenges include a late credible Republican recruit post-filing, a major scandal, health issue, or overwhelming national GOP midterm wave, with primaries set for August 11 ahead of the November 3 vote.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCT-04 House Election Winner
CT-04 House Election Winner
$23,001 Vol.
$23,001 Vol.
Democratic Party
93%
Republican Party
5%
$23,001 Vol.
$23,001 Vol.
Democratic Party
93%
Republican Party
5%
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, 10:30 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...Incumbent Rep. Jim Himes (D) commands trader consensus at 92.5% implied probability to retain Connecticut's 4th Congressional District, a solidly Democratic seat with a D+13 Cook Partisan Voting Index, reflecting his unchallenged dominance since 2009 and consistent double-digit reelection margins amid weak Republican opposition. No high-profile GOP challenger has emerged ahead of the June 9 filing deadline, reinforcing the district's blue Fairfield County base favoring Democrats in general elections. Recent constituent protests over Himes' FISA stance last week drew minor attention but failed to dent his position. Realistic challenges include a late credible Republican recruit post-filing, a major scandal, health issue, or overwhelming national GOP midterm wave, with primaries set for August 11 ahead of the November 3 vote.
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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