The Winner
If you live in Missouri's 3rd U.S. House District, you will continue to be represented in Congress by Rep. Bob Onder (R-MO), who has been declared the winner of the 2026 congressional race, according to the Associated Press.
Onder took about 52.9% of the vote to about 44.4% for Democrat Bethany Mann, a margin of about 8 points or about 23,984 votes, according to the state's official results as of Nov. 10.
The winner rests on the Associated Press call, and the vote figures are preliminary: they may change until the state certifies the total. The seat stays in Republican hands.
The Race
Mann, the Democratic nominee, reached the Nov. 3 ballot by winning the Aug. 4 Democratic primary with about 39,358 votes. Libertarian Jim Higgins also ran and took about 2.7% of the general election vote. Cook Political Report rated the seat Solid Republican before the election.
The district has about 780,400 residents, about 85.6 percent of them white, about 4.7 percent Black, about 3.6 percent Hispanic, and about 2.2 percent Asian, according to geographic data for the district. Median household income is about $81,900 and median age is about 39.
About 35.5 percent of adults hold a bachelor's degree or higher; the unemployment rate is about 3.4 percent and about 9.9 percent of residents live below the poverty line. The U.S. Census Bureau district map shows the district takes in all or parts of Audrain, Camden, Crawford, Franklin and Gasconade counties, among others.
What's Next
Onder is set to take office on Jan. 3, 2027. He said he is advancing legislation to permanently move a student-parent child-care grant program from the Department of Education to the Department of Health and Human Services, according to the Office of Representative Bob Onder, which reported his statement on July 16, after the bill advanced out of the House Education and the Workforce Committee.
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