Mark Tedford secured the Republican nomination for Oklahoma’s open 1st Congressional District after leading a crowded June primary and advancing when his runoff opponent withdrew, positioning him as the clear favorite in a district long held by Republicans. John Croisant, the unopposed Democratic nominee and Tulsa school board member, has focused his campaign on education, families, and economic issues while publicly urging Tedford to debate ahead of the November 3 general election. The seat became vacant after incumbent Kevin Hern sought a U.S. Senate bid, triggering a Republican primary scramble that favored Tedford’s state legislative experience and fundraising edge. Early voting begins October 28 in a district rated solidly Republican by forecasters, where trader consensus reflects the party’s structural advantage and limited Democratic infrastructure. A late scandal, health event, or unusually high Democratic turnout could still alter the outcome before ballots are cast.