2024Final results
2024 election for Missouri's 3rd District
U.S. House · Missouri
Bob Onder (R) won with 61.3% of the vote, defeating Bethany Mann (D) by 26.0 points.
Bob OnderRepublican · winner
61.3%240,620
Bethany MannDemocrat
35.3%138,532
Jordan RowdenLibertarian
2.4%9,298
William HastingsGreen
1.0%4,013
392,463 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Bethany MannBob Onder
$38.1K
Raised by the campaign
$1.8M
$47.7K
Spent by the campaign
$1.6M
$4.4K
Cash on hand
$150.4K
Campaign money: FEC, through Dec 31, 2024.
Source: FEC campaign filingsUpdated Dec 31, 2024
The candidates
Bob Onder (R)Bethany Mann (D)
Also on the ballot: Jordan Rowden (Libertarian), 2.4%; William Hastings (Green), 1.0%