2026 midterm predictions: AI forecast and live odds

Americans vote on Tuesday, November 3, 2026. Live prediction market odds for control of Congress and the Senate races that decide it, from Kalshi and Polymarket, refreshed several times a day.

Election day was November 3, 2026

The 2026 midterms are over. This page keeps Sikt’s forecasts as they were published. The full record, and every page from the benchmark: how Sikt forecast the 2026 midterms.

Sikt Midterms Board, Nov 3, 2026: who wins Congress? House: Democrats 91%, Republicans 9%. Senate: Democrats 75%, Republicans 25%.
Sikt Midterms Board · Sikt forecast from Nov 3, 2026

Who controls Congress?

The House

Sikt: Democrats 91%

Chance Democrats win control (markets at Sikt’s forecast, Nov 3, 2026):

Sikt 91%Polymarket 94%

80%85%90%95%100%SepOctNov

Sikt Midterm Bench preview, Nov 3, 2026. Graded after the results.

Learn more: Sikt vs. the market →

The Senate

Sikt: Democrats 75%

Chance Democrats win control (markets at Sikt’s forecast, Nov 3, 2026):

Sikt 75%Polymarket 76%

40%50%60%70%80%SepOctNov

Sikt Midterm Bench preview, Nov 3, 2026. Graded after the results.

Learn more: Sikt vs. the market →

Watch: Sikt's midterm forecast against the markets, why it disagrees in Alaska, and how the S&P 500 might react to each Senate result, in an 11-minute video. The video loads from YouTube when you press play.

Senate races to watch

Closest races first, by the average of Kalshi and Polymarket. Sikt’s latest Midterm Bench forecast is shown first, and in green on each chart. Each card links to live odds, Sikt’s read, history and the market rules.

Sikt Midterm Bench

Sikt is forecasting these races.

Sikt Intelligence is running a live benchmark on the 2026 midterms. Our AI superforecaster puts its own probability on control of Congress and the key Senate races. Forecasts are up for control of the House and Senate and for every key Senate race below, updated each round, next to Kalshi and Polymarket, and every forecast will be scored against the results.

RaceOutcomeSiktMarketGap (pts)
AlaskaMary Peltola53%71%-18
NebraskaPete Ricketts64%69%-5
MichiganAbdul El-Sayed77%79%-2
MaineTroy Jackson66%74%-7
TexasJames Talarico62%72%-10
OhioSherrod Brown60%72%-12
IowaAshley Hinson51%50%+1
SiktKalshiPolymarket
Alaska: Mary Peltola
40%50%60%70%80%90%SepOctNov
Nebraska: Pete Ricketts
50%60%70%80%90%SepOctNov
Michigan: Abdul El-Sayed
50%60%70%80%90%SepOctNov
Maine: Troy Jackson
40%50%60%70%80%SepOctNov
Texas: James Talarico
40%50%60%70%80%SepOctNov
Ohio: Sherrod Brown
40%50%60%70%80%SepOctNov
Iowa: Ashley Hinson
40%50%60%70%80%SepOctNov

Updated 2026-11-03 16:21 UTC. Market is the average of Kalshi and Polymarket at the time of Sikt’s forecast. Every forecast will be scored against the results.

How much will each race be won by?

Sikt’s middle estimate of the winner’s lead, in points, its 80% range (the result should land inside it 8 times in 10) and Kalshi’s margin markets at the start of round 13, Nov 3, 2026. Closest races first. In the chart, Democrats (and in Nebraska, the independent Osborn) are to the right of the middle line. How to read the margins →

Sikt: middle estimate, bar = 80% rangeKalshi market, same marks
RaceSiktSikt’s 80% rangeMarketR ← → D
AlaskaPeltola +1.0Sullivan +5.4 to Peltola +7.0Peltola +2.6
IowaHinson +1.2Hinson +7.2 to Turek +4.6Turek +0.3
KansasHamilton +2.0Marshall +5.2 to Hamilton +8.2Hamilton +1.4
OhioBrown +2.1Husted +3.4 to Brown +7.3Brown +3.4
TexasTalarico +2.4Paxton +3.4 to Talarico +8.0Talarico +3.0
South CarolinaGraham +2.8Graham +9.2 to Andrews +3.5Graham +1.2
NebraskaRicketts +3.1Ricketts +9.5 to Osborn +3.1Ricketts +3.0
MaineJackson +3.2Collins +4.0 to Jackson +10.1Jackson +2.4
MichiganEl-Sayed +5.0Rogers +0.6 to El-Sayed +10.6El-Sayed +3.6
MinnesotaFlanagan +7.6Flanagan +1.7 to Flanagan +13.4Flanagan +7.4
GeorgiaOssoff +8.3Ossoff +2.8 to Ossoff +13.9Ossoff +11.4
New HampshirePappas +8.5Pappas +3.0 to Pappas +14.2–
North CarolinaCooper +9.7Cooper +4.1 to Cooper +14.9Cooper +13.2

Seats, Sikt’s middle estimate and 80% range: Senate: Democrats win 52 seats (48 to 55), market 52 or fewer; House: Democrats win 230 seats (219 to 243), market 241; House popular vote D +8.2, market D +9.8.

Just for fun

The long shots.

Politics has a long tail. Some very unlikely events, with illustrative odds: not live markets, and not Sikt Midterm Bench forecasts.

Long shot

GeopoliticsWILD-001

The Statue of Liberty is sent back to France before 2035?

Resolves Dec 31, 2034Odds Illustrative

Sikt says

1.2%

Range 0.6–2.2%

Market says

2.7%

Sikt sees it 1.5 pts less likely than the market

Long shot

GeopoliticsWILD-002

Trump and Kim Jong Un play golf together before 2029?

Resolves Dec 31, 2028Odds Illustrative

Sikt’s read: They met three times in 2018–19 and Trump says he’d do it again. Golf is the hard part: it needs a course and security both sides accept. Leaning no.

Sikt says

1.1%

Range 0.6–2%

Market says

3.4%

Sikt sees it 2.3 pts less likely than the market

How to read midterm odds

  • The president’s party usually loses ground. It has lost House seats in every midterm since World War II except 1998 and 2002, a strong base rate.
  • The Senate is about the map. Only 35 of 100 seats are up, so which states vote matters as much as the national mood.
  • Markets and polls answer different questions. Polls measure support today; markets price who will win. See prediction markets vs. polls.
  • Long shots are overpriced. A candidate at 5% usually wins less often than that; see the favorite-longshot bias.

FAQ

When are the 2026 midterm elections?

Tuesday, November 3, 2026. Voters elect all 435 members of the House and 35 of the 100 senators, including special elections in Ohio and Florida.

Who is favored to win the House?

As of Nov 4, 2026, the prediction markets price a Democratic House at: Polymarket at >99%. These are market prices, not guarantees, and they can move quickly in the final weeks.

Who is favored to win the Senate?

As of Nov 4, 2026, the prediction markets price a Democratic Senate at: Polymarket at >99%. These are market prices, not guarantees, and they can move quickly in the final weeks.

What is the Sikt Midterm Bench?

Sikt Intelligence's live test on the 2026 midterms: our AI superforecaster forecasts the key Senate races ahead of election day, and its forecasts are published next to the market odds and scored against the results.

Are prediction markets accurate on elections?

Often, and they have beaten polls in many studies, but not always: they can be confidently wrong, and long shots tend to be overpriced.

Market data from the public Kalshi and Polymarket APIs, shown for information only. Prices are midpoints or last trades and can be several hours old. Sikt Intelligence is not affiliated with Kalshi or Polymarket. Not financial or investment advice.