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How many Senate Republicans will lose their primary in 2026?
kalshi

How many Senate Republicans will lose their primary in 2026?

Jan 23, 2026, 4:00 PM EST - Nov 3, 2026, 10:00 AM EST
Total volume:
$640,657
Volume 24h:
$6,814
92%
Liquidity:
N/AN/A
Open interest:
$251,449
0.25%

2

 - Kalshi

2 - Kalshi

1W

News

Positive

Negative

Neutral

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Vol.

·

Resolves Nov 3, 2026

Will exactly 2 Senate Republican members lose their primary in 2026?

100%chance
Amount

$

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kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 99.7¢ buys you 100 shares | Odds: 100% Total Payout: $100 | Net Profit: $0 Multiplier: 1.00x | ROI: 0.3% | APY: 2% 68 days to resolution
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Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

2

Trade
100%
Yes 99.7¢No 0.5¢
0.2¢
N/A
$199,297
0.96%
37%
$55,896
2mo 1w 1d
active
kalshi

3

1%
Yes 0.5¢No 99.9¢
0.4¢
N/A
$140,058
2%
26%
$45,149
2mo 1w 1d
active
kalshi

4 or more

0%
2%
Yes 1.6¢No 99.8¢
1.4¢
N/A
$183,611
1%
13%
$90,303
2mo 1w 1d
active
kalshi

1

0%
Yes 100¢No 100¢
100¢
N/A
$68,580
N/A
N/A
$34,865
2mo 1w 1d
No
kalshi

0

0%
Yes 0.1¢No 99.9¢
0.1¢
N/A
$49,111
N/A
N/A
$25,236
2mo 1w 1d
No
Total markets: 5

Description

The 2026 midterm elections will include Republican Senate primaries across the country. This event counts how many sitting Republican U.S. Senators lose their party's primary election before November 3, 2026, and resolves based on the exact count falling into one of five categories: zero, one, two, three, or four or more incumbents defeated.

Kalshi

Resolution depends on counting Republican Senate incumbents who lose their primary election in 2026 before November 3. To qualify for inclusion, a candidate must be running for re-election to the same legislative body (Senate) for the Republican Party as of their primary date, with the primary election held on the same date as most Congressional elections in 2026 (typically an early Tuesday in November). The candidate must lose the Republican primary to another candidate. In non-partisan or top-two primary systems, an incumbent advancing to the general election is not considered to have lost, regardless of placement relative to other advancing candidates. If primaries for both an unexpired term (special election) and the next full term (general election) are held concurrently, only results from the full-term primary are counted. The market resolves to the outcome matching the final count: exactly 0, exactly 1, exactly 2, exactly 3, or 4 or more Republican Senate incumbents defeated in their primaries.