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How Accurate Were Prediction Markets in the 2026 Midterms? The Scorecard

The scorecard we pre-registered in August: Kalshi's favorite won 31 of 32 called Senate races and 46 of 46 called House districts. Race by race, misses included.

Scorecard graphic: Kalshi favorites won 31 of 32 called 2026 Senate races and 46 of 46 called House districts
Scorecard graphic: Kalshi favorites won 31 of 32 called 2026 Senate races and 46 of 46 called House districts
Founder, PredictionMarketsPicks
November 4, 2026

Three months before the election, we published the grading rule, the race list and the denominator, and said we'd run exactly that whichever way it landed. Here it is, as of Nov. 4.

The numbers

SetScoredCalled so farMarket favorite wonLostPending
Senate (pre-registered)34323112
House districts (pre-registered)664646019, plus 1 no call
Governor (not pre-registered)15141311

The price is Kalshi's last hourly close at 11 PM ET on Nov. 2. The side above 50¢ is the favorite. We scored each race win or lose, with no Brier score, the same method we used for 2024.

Race calls come from the Associated Press, or from Fox News where that's the call we could read directly. Each race page credits its own call.

The miss

South Carolina Senate. Darline Graham was the favorite at 67¢ and Annie Andrews won, a seat flip. It's the only called Senate race the favorite lost.

The closest called favorite that held was Iowa Senate, where Josh Turek won from 53¢.

Markets vs. Sabato's Crystal Ball

The fixed comparison was Sabato's ratings, converted on a ladder we published in advance: toss-up 50, lean 60, likely 75, safe 90.

Ratings usedRacesMarketSabato
Final ratings, Nov. 232 called Senate races31 of 3230 of 32
The August table we locked12 called races12 of 127 of 10, plus 2 toss-ups

The final ratings missed Iowa and South Carolina, both rated Lean R. The August table had Texas at Lean R, Iowa at Lean R and Kansas at Likely R. Democrats won all three. Sabato's ratings moved during the fall, so the final ratings are the fairer read of where forecasters ended up.

Where they differed by more than 10 points

The test we called the one that actually matters: races where the market and the final ratings were more than 10 points apart.

RaceFinal ratingLadderMarket (same party)Winner
North CarolinaLikely D7598¢Roy Cooper
GeorgiaLikely D7597¢Jon Ossoff
New HampshireLikely D7594¢Chris Pappas
MichiganLean D6079¢Abdul El-Sayed
MinnesotaLikely D7591¢Peggy Flanagan
TexasLean D6074¢James Talarico
MaineLean D6073¢Troy Jackson
OhioLean D6072¢Sherrod Brown
IowaLean R6049¢Josh Turek

The market's favorite won all nine. Using the August table instead, there were also nine such races, and the market's favorite won those nine too.

Our three tests

In August we named three ways this could come out badly.

  1. The market's favorite loses more disagreements than it wins. It did not: 9 wins, 0 losses.
  2. The market's Senate hit rate trails Sabato's. It does not so far: 31 of 32 against 30 of 32, with two races pending.
  3. The redistricting math beats the chamber contracts on the House result. Still open. It can't be graded until the House count is final.

Still pending

Alaska Senate. Not called. Kalshi had the Democratic side at 71¢ on the final tape.

Mississippi Senate. Not called. Kalshi had Cindy Hyde-Smith at 83¢ and Scott Colom at 16¢.

House. 19 priced districts are uncalled, and we'll add them as they're called. CA-40 had no priced market on the final tape, so it's scored as a no call, as the rule requires. The 369 districts without their own contract aren't graded, because no district-level price exists for them.

This page updates as those races are called, whichever way they land.

Outside the pre-registered set

Louisiana Senate. We set this seat aside in September because its market was found after the list was fixed. It's reported here and not counted. Julia Letlow won; Kalshi had her at 87¢.

Governors. We didn't pre-register these, so they're reported separately. The favorite won 13 of 14 called races. The miss was Texas: Greg Abbott at 60¢, Gina Hinojosa won. Kansas is uncalled.

Every race is on the 2026 results hub, and the running forecaster comparison is on markets vs. pundits.

How Accurate Were Prediction Markets in the 2026 Midterms? The Scorecard — frequently asked

How accurate were prediction markets in the 2026 midterms?

On the rule we published in August, Kalshi's favorite at 11 PM ET on Nov. 2 won 31 of 32 called Senate races and 46 of 46 called House districts. Two Senate races and 19 priced House districts are still pending.

What did prediction markets get wrong in 2026?

South Carolina Senate, where Darline Graham was the favorite at 67¢ and Annie Andrews won. Outside the pre-registered set, the market also missed the Texas governor race, with Greg Abbott at 60¢ and Gina Hinojosa winning.

Did prediction markets beat the pundits in 2026?

On the same 32 called Senate races, Kalshi went 31 for 32 and the final Sabato's Crystal Ball ratings went 30 for 32. In the nine races where the two differed by more than 10 points, the market's favorite won all nine.

How was the 2026 scorecard graded?

By a rule published before the election: take the Kalshi price at about 11 PM ET on Nov. 2, treat the side above 50¢ as the favorite, and score it win or lose. The race list and denominator were also fixed in advance.

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Benny Ricciardi

Founder · The 7 Oracles

Benny Ricciardi is an FSWA Award Winner and published author. He ran 4Deep Sports as CEO, led marketing at FTN Network as CMO, and traded bonds on Wall Street. He founded PredictionMarketsPicks.

Follow @BennyR11 →
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