Market snapshot: Nov 1, 2026, 6:00 AM UTC. Prices may have changed since this snapshot.

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Event GroupKALSHIElections

How many Senate seats will Republicans hold after the 2028 election?

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How many Senate seats will Republicans hold after the 2028 election?

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Current odds

Snapshot from Nov 1, 2026, 6:00 AM UTC

As of Nov 1, 2026, 6:00 AM UTC, the highest-priced outcome on Kalshi is At least 42 at 96.5%.

Kalshi

At least 4296.5%
At least 4494.5%
At least 4693%
At least 4790%
At least 4877%

Yes prices. They are not order quotes; check each platform's rules, fees and live prices before trading.

Price ChartContract price history

15 markets tracked

Historical observations can differ from current quotes. Kalshi points are hourly trade averages.

Saved prices are comparisons, not executable quotes. A price difference does not establish arbitrage. Check both contracts, live order prices, fees and available size.

Will Republicans hold at least 42 Senate seats after the 2028 election?

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Single-Platform Markets(15)

Market	Platform	Price
Will Republicans hold at least 42 Senate seats after the 2028 election?	Kalshi	96.5%
Will Republicans hold at least 44 Senate seats after the 2028 election?	Kalshi	94.5%
Will Republicans hold at least 46 Senate seats after the 2028 election?	Kalshi	93.0%
Will Republicans hold at least 47 Senate seats after the 2028 election?	Kalshi	90.0%
Will Republicans hold at least 48 Senate seats after the 2028 election?	Kalshi	77.0%
Will Republicans hold at least 49 Senate seats after the 2028 election?	Kalshi	63.0%
Will Republicans hold at least 50 Senate seats after the 2028 election?	Kalshi	50.0%
Will Republicans hold at least 51 Senate seats after the 2028 election?	Kalshi	37.0%
Will Republicans hold at least 52 Senate seats after the 2028 election?	Kalshi	23.0%
Will Republicans hold at least 53 Senate seats after the 2028 election?	Kalshi	10.0%
Will Republicans hold at least 54 Senate seats after the 2028 election?	Kalshi	8.0%
Will Republicans hold at least 55 Senate seats after the 2028 election?	Kalshi	7.0%
Will Republicans hold at least 56 Senate seats after the 2028 election?	Kalshi	5.5%
Will Republicans hold at least 58 Senate seats after the 2028 election?	Kalshi	4.0%
Will Republicans hold at least 60 Senate seats after the 2028 election?	Kalshi	3.0%

Rules & Resolution

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Reported volume · provider units

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Same-question pairs

Source snapshot: Nov 1, 2026, 6:00 AM UTC

About This Event

When the new Senate convenes in Jan 2029 If the Republican Party holds at least X seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. This market will close and expire early if the event occurs.

AI-generated analysis based on market data. Not financial advice.

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Event: How many Senate seats will Republicans hold after the 2028 election?
Source snapshot: Nov 1, 2026, 6:00 AM UTC
Reported event volume (provider units): K 0 contracts
Coverage: 15 of 15 saved contracts included.
Prices are saved observations, not executable quotes. Listed close dates do not promise settlement or payout time.

Contract: Will Republicans hold at least 60 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-60; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 3.0%; 24h change unavailable
Outcome No: 97.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 60 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 58 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-58; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 4.0%; 24h change unavailable
Outcome No: 96.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 58 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 56 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-56; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 5.5%; 24h change unavailable
Outcome No: 94.5%; 24h change unavailable
Saved rules: If the Republican Party holds at least 56 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 55 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-55; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 7.0%; 24h change unavailable
Outcome No: 93.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 55 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 54 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-54; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 8.0%; 24h change unavailable
Outcome No: 92.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 54 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 53 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-53; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 10.0%; 24h change unavailable
Outcome No: 90.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 53 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 52 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-52; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 23.0%; 24h change unavailable
Outcome No: 77.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 52 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 51 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-51; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 37.0%; 24h change unavailable
Outcome No: 63.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 51 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 50 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-50; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 50.0%; 24h change unavailable
Outcome No: 50.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 50 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 49 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-49; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 63.0%; 24h change unavailable
Outcome No: 37.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 49 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 48 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-48; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 77.0%; 24h change unavailable
Outcome No: 23.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 48 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 47 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-47; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 90.0%; 24h change unavailable
Outcome No: 10.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 47 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 46 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-46; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 93.0%; 24h change unavailable
Outcome No: 7.0%; 24h change unavailable
Saved rules: If the Republican Party holds at least 46 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 44 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-44; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 94.5%; 24h change unavailable
Outcome No: 5.5%; 24h change unavailable
Saved rules: If the Republican Party holds at least 44 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Contract: Will Republicans hold at least 42 Senate seats after the 2028 election?
Provider: kalshi; ID: kalshi-KXSENATESEATSR-29-42; status: active
Source: https://kalshi.com/markets/kxsenateseatsr-29
Observed: Nov 1, 2026, 6:00 AM UTC
Listed close: Feb 1, 2029, 3:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 96.5%; 24h change unavailable
Outcome No: 3.5%; 24h change unavailable
Saved rules: If the Republican Party holds at least 42 seats in the U.S. Senate at the end of the day the new Congress first convenes after the November 7, 2028, general election, then the market resolves to Yes. Secondary rules: Independent and unaffiliated members who caucus with Republicans will be included. Every voting seat in the Senate counts, including any seat not on the 2028 ballot. Vacant and disputed seats count toward no party. Early close condition: This market will close and expire early if the event occurs.

Saved cross-platform review:
No exact pair with two valid binary Yes prices is available for comparison.

Explain the named outcomes, material rule/deadline differences, and evidence limits. Keep Polymarket dollar volume separate from Kalshi contract counts. Do not average unrelated contracts, infer missing prices or changes, or describe unreviewed/related pairs as equivalent. Distinguish listed prices from executable bid/ask prices, fees and available size. Do not invent current news, confidence scores or settlement guarantees. Cite the provided source links and identify what further evidence would be needed.

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KALSHIElections

How many Senate seats will Republicans hold after the 2028 election?

Volume$0.00

Markets15

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Will Republicans hold at least 42 Senate seats after the 2028 election?

kalshi

Will Republicans hold at least 42 Senate seats after the 2028 election?

Yes: 96.5¢
No: 3.5¢

Will Republicans hold at least 44 Senate seats after the 2028 election?

kalshi

Will Republicans hold at least 44 Senate seats after the 2028 election?

Yes: 94.5¢
No: 5.5¢

Will Republicans hold at least 46 Senate seats after the 2028 election?

kalshi

Will Republicans hold at least 46 Senate seats after the 2028 election?

Yes: 93.0¢
No: 7.0¢

Will Republicans hold at least 47 Senate seats after the 2028 election?

kalshi

Will Republicans hold at least 47 Senate seats after the 2028 election?

Yes: 90.0¢
No: 10.0¢

Will Republicans hold at least 48 Senate seats after the 2028 election?

kalshi

Will Republicans hold at least 48 Senate seats after the 2028 election?

Yes: 77.0¢
No: 23.0¢

Prices are catalog snapshots and may have changed. Check each market's rules and observation time.

KalshiPolitics

Blue tsunami in 2026?

Kalshi: Will Democrats hold 215 or more seats in the House after the 2026 midterms AND hold 48 or more seats in the Senate after the 2026 midterms?

Related contracts

PM Yes 64%Rules differK Yes 92.5%

Blue wave in 2026?

Kalshi: Will Democrats hold 215 or more seats in the House after the 2026 midterms AND hold 48 or more seats in the Senate after the 2026 midterms?

Related contracts

PM Yes 86.5%Rules differK Yes 92.5%

Blue wave in 2026?

Kalshi: Will the number of Iowa races won by the Democratic Party among IA-01, IA-02, IA-03, the U.S. Senate seat, and the Governorship during the November 3, 2026 general election be exactly 5?

Related contracts

PM Yes 86.5%Rules differK Yes 40%

Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.

Saved prices; check contract rules.

8 saved comparisonsNext deadline Nov 4, 2026 UTC

PolymarketKalshiPolitics

Where will Republicans win state legislative supermajorities in 2026?

PM $5.9K · K 5.3K contracts

Will the Republican Party control the Texas Senate after the 2026 Midterm elections?

Kalshi: Will the number of Texas Senate seats held by Republicans be at least 21 after the November 3, 2026 general election?

Related contracts

PM Yes 96.4%Rules differK Yes 5%

Related or unreviewed contracts may settle differently. Their gap is not an equivalent-contract comparison.

Saved prices; check contract rules.

1 saved comparisonNext deadline Nov 4, 2026 UTC

KalshiPolitics

How many House seats will Democrats hold after the 2028 election?

K 239.37 contracts

Will Democrats hold at least 185 House seats after the 2028 election?Yes 97.5%

Will Democrats hold at least 190 House seats after the 2028 election?Yes 97%

Will Democrats hold at least 195 House seats after the 2028 election?Yes 96.5%

+15 moreNext deadline Feb 1, 2029 UTC

PolymarketPolitics

How many Senate and House seats will Republicans have after the midterms?

PM $171.7K

Will Republicans hold 47–49 Senate seats and 193–207 House seats after the 2026 midterms?Yes 27.5%

Will Republicans hold ≤46 Senate seats and ≤192 House seats after the 2026 midterms?Yes 24.4%

Will Republicans hold 47–49 Senate seats and ≤192 House seats after the 2026 midterms?Yes 16.1%

+10 moreNext deadline Nov 4, 2026 UTC

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How many Senate seats will Republicans hold after the 2028 election?

How many Senate seats will Republicans hold after the 2028 election?

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