Robert F. Onder, Jr.
MO-3What the Signal reads
Safe R
Onder is the Republican incumbent, defending a seat the Signal rates Safe R. The market has Onder at 97.9¢ against Mann's 4.6¢, up 3.5¢ since August 3. Onder leads 21.9 to 1 in money raised.
The market
Onder · Republican contract
97.9¢
▲ 3.5¢since August 3
This contract settles on whether a Republican holds the seat, not on Robert F. Onder, Jr. by name.
5,066 traded · 4,331 open. Prices are the yes ask; sides may not sum to 100.Checked 2:09 PM ET
Onder v Mann
Metric by metricThe 2026 race
Missouri 3rd DistrictPrior result
R+26.0
2024 general election, won by Robert F. Onder, Jr..
Fundraising
21.9 to 1
Raised 2025 to 2026, through July 15.