Oklahoma's 1st congressional district, anchored in the Tulsa metro area, has delivered consistent Republican margins exceeding 20 points in recent cycles, driving the market's 90.5% consensus on the GOP nominee. The open seat after incumbent Kevin Hern's March 2026 Senate bid produced a crowded Republican primary that resolved with state Rep. Mark Tedford as the nominee following Jackson Lahmeyer's withdrawal ahead of the August 25 runoff. Democrat John Croisant faces structural headwinds in a district rated Solid Republican by forecasters. Traders price in these fundamentals while recognizing that an unusually strong Democratic turnout or unforeseen national political shifts could narrow the gap before the November 3 general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedOK-01 House Election Winner
$24,814 Vol.
$24,814 Vol.
Republican Party
91%
Democratic Party
9%
$24,814 Vol.
$24,814 Vol.
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, 11:23 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...Oklahoma's 1st congressional district, anchored in the Tulsa metro area, has delivered consistent Republican margins exceeding 20 points in recent cycles, driving the market's 90.5% consensus on the GOP nominee. The open seat after incumbent Kevin Hern's March 2026 Senate bid produced a crowded Republican primary that resolved with state Rep. Mark Tedford as the nominee following Jackson Lahmeyer's withdrawal ahead of the August 25 runoff. Democrat John Croisant faces structural headwinds in a district rated Solid Republican by forecasters. Traders price in these fundamentals while recognizing that an unusually strong Democratic turnout or unforeseen national political shifts could narrow the gap before the November 3 general election.
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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