Elections Intelligence

Missouri 3rd District

DEFENDED SEATSafe R

Robert F. Onder, Jr. (R) has held this seat since 2025 and is running for re-election. Before that: Blaine Luetkemeyer (R).

Bethany E Mann Challenger
4.6¢
Party market · checked 2:09 PM ETView on Kalshi ↗
97.9¢

FTP Race Signal

FTP Race SignalA composite of market, polling and money. The prediction-market price anchors it; a polling average moves it: the last 30 days, or the three most recent pollsters when fewer polled. Polls paid for by a candidate, party or allied group move 2 points toward the other side and count half. When the three most recent independent pollsters each have the race within three points, it is a Toss-up unless the market is already decisive. Fundraising counts only at a five-to-one gap. Past results are context, not inputs. A rating changes only when the evidence clears the line.

The market prices this seat about where its history left it: a 26-point Republican hold in 2024, priced at 97.9¢ today.

Safe R
Safe DLikely DLean DToss-upLean RLikely RSafe R
Fundraising · Lean RR 21.93-to-1 in receipts. Prior result · Safe RR+26.01 in 2024. Market · Safe RR 97.9¢: traders' price for a Republican hold.

No public polls. The market favors Onder.

As of October 12.

Market

BandPRICEToss-up50¢ to 65¢Lean65¢ to 82¢Likely82¢ to 95¢Safe95¢ and above
R 97.9¢

Kalshi party market · checked 2:09 PM ET

View market on Kalshi ↗

Polling

BandPOINTSToss-up0 to 5Lean5 to 10Likely10 to 20Safe20 and above
—

Prior result

BandPOINTSToss-up0 to 5Lean5 to 12Likely12 to 25Safe25 and above
R+26.0

Robert F. Onder, Jr. (R)

61.3% to 35.3% · 2024 general election

def. Bethany E Mann (D). Margin verified against retrieved official results.

Fundraising

BandRATIO TO 1Parity1 to 5Lean5 and above
R 21.93 to 1

Raised 2025 to 2026 · thru Jul 15

Bethany E Mann$43.3K ↗$2.8K cash
Robert F. Onder, Jr.$950.3K ↗$471.5K cash

Total receipts in the 2025 to 2026 two-year cycle, through July 15, 2026.

The general election is on November 3, which is 22 days away.