Oklahoma's 1st Congressional District, centered in the Tulsa area, carries a strong Republican partisan lean reflected in its Cook Partisan Voting Index and consistent historical margins exceeding 20 points in recent cycles. The open seat created by incumbent Kevin Hern's Senate bid drew a crowded Republican primary that resolved with state Rep. Mark Tedford securing the nomination after runner-up Jackson Lahmeyer withdrew, while Democrat John Croisant advanced unopposed. Traders price the Republican outcome at 90.5% due to this nominee consolidation, the district's structural advantages, and limited Democratic infrastructure or recent polling shifts. A realistic challenge would require an unforeseen scandal affecting Tedford, a sharp national Democratic surge altering turnout, or substantial late fundraising and visibility gains by Croisant within the November 3 resolution window.
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, centered in the Tulsa area, carries a strong Republican partisan lean reflected in its Cook Partisan Voting Index and consistent historical margins exceeding 20 points in recent cycles. The open seat created by incumbent Kevin Hern's Senate bid drew a crowded Republican primary that resolved with state Rep. Mark Tedford securing the nomination after runner-up Jackson Lahmeyer withdrew, while Democrat John Croisant advanced unopposed. Traders price the Republican outcome at 90.5% due to this nominee consolidation, the district's structural advantages, and limited Democratic infrastructure or recent polling shifts. A realistic challenge would require an unforeseen scandal affecting Tedford, a sharp national Democratic surge altering turnout, or substantial late fundraising and visibility gains by Croisant within the November 3 resolution window.
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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