Incumbent Republican Speaker Mike Johnson faces limited opposition in Louisiana’s 4th congressional district, a seat rated Solid or Safe Republican by major forecasters and one Johnson carried with 85.8 percent in 2024. The district’s consistent partisan lean, combined with Johnson’s institutional resources and name recognition, underpins the market’s 94.5 percent implied probability for a Republican victory. Democratic candidates Conrad Cable and Matthew Gromlich have raised minimal funds and lack statewide profiles, while intra-party Republican challengers have not gained traction. A November 3 jungle primary followed by a possible December 12 runoff determines the winner; late developments such as a major scandal, health event affecting Johnson, or an unprecedented national partisan shift would be required to alter the current trader consensus.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLA-04 House Election Winner
$11,997 Vol.
$11,997 Vol.
Republican Party
95%
Democratic Party
6%
$11,997 Vol.
$11,997 Vol.
Republican Party
95%
Democratic Party
6%
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...Incumbent Republican Speaker Mike Johnson faces limited opposition in Louisiana’s 4th congressional district, a seat rated Solid or Safe Republican by major forecasters and one Johnson carried with 85.8 percent in 2024. The district’s consistent partisan lean, combined with Johnson’s institutional resources and name recognition, underpins the market’s 94.5 percent implied probability for a Republican victory. Democratic candidates Conrad Cable and Matthew Gromlich have raised minimal funds and lack statewide profiles, while intra-party Republican challengers have not gained traction. A November 3 jungle primary followed by a possible December 12 runoff determines the winner; late developments such as a major scandal, health event affecting Johnson, or an unprecedented national partisan shift would be required to alter the current trader consensus.
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