Incumbent Rep. Jonathan Jackson advanced unopposed through the March 17 Democratic primary in Illinois' 1st Congressional District, solidifying trader consensus at 92.5% for the Democratic Party ahead of the November 3 general election against Republican nominee Christian Maxwell, who defeated Marcus Lewis in the GOP primary. This heavily Democratic seat, encompassing Chicago's South Side with a strong partisan voter index favoring Democrats by wide margins in past cycles, drives the lopsided odds through incumbency advantage, reliable urban turnout, and absent intra-party challenges. Potential disruptions include late-breaking scandals, health issues, legal developments affecting Jackson, or an overwhelming national Republican midterm wave, though historical base rates for safe districts suggest low likelihood.
Experimental AI-generated summary referencing Polymarket data · UpdatedIL-01 House Election Winner
IL-01 House Election Winner
$12,007 Vol.
$12,007 Vol.
Democratic Party
93%
Republican Party
7%
$12,007 Vol.
$12,007 Vol.
Democratic Party
93%
Republican Party
7%
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, 11:08 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. Jonathan Jackson advanced unopposed through the March 17 Democratic primary in Illinois' 1st Congressional District, solidifying trader consensus at 92.5% for the Democratic Party ahead of the November 3 general election against Republican nominee Christian Maxwell, who defeated Marcus Lewis in the GOP primary. This heavily Democratic seat, encompassing Chicago's South Side with a strong partisan voter index favoring Democrats by wide margins in past cycles, drives the lopsided odds through incumbency advantage, reliable urban turnout, and absent intra-party challenges. Potential disruptions include late-breaking scandals, health issues, legal developments affecting Jackson, or an overwhelming national Republican midterm wave, though historical base rates for safe districts suggest low likelihood.
Experimental AI-generated summary referencing Polymarket data · Updated
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