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Politics · US midterms

Which Senate races will be within 5%?

The deadline passed on 4 November 2026. The market is waiting for the official result, so prices may still move before it settles. How markets resolve.

As of 8 November 2026, the highest chances on Polymarket are Alaska at 99%, Iowa at 98% and Maine at 6%. Each line is its own yes-or-no market.

Maine moved the most this week: 70% to 6% (−63.5 pts).

Open on the mapRules and result on Polymarket

Chances now

New to this? How to read a market · What the odds mean

OutcomeChance24 hours7 daysTraded, 7 days
Alaska99%−0.3 pts+21.7 pts$4k
Iowa98%−1.5 pts+26.8 pts$3k
Maine6%0.0 pts−63.5 pts$2k
Kansas5%0.0 pts−55.4 pts$8k
Montana1%+0.7 pts−51.6 pts$340

A price of 99% means traders pay about $0.99 for a “Alaska” share, which pays $1 if that line resolves Yes. It is the crowd’s estimate, not a forecast by Nimb. Each line is a separate yes-or-no market, so the chances do not add up to 100%.

Key facts

Volume and liquidity, explained · How markets resolve · Fees

Largest public holders

WalletHoldsValueUnrealised P&L
0x66e7…8bcdKansas · No$3k+$1k
sciuboiIowa · Yes$1k+$259
50degreesIowa · Yes$755+$196
SnapElectionAvoiderIowa · Yes$730+$419
50degreesAlaska · Yes$607+$293
sciuboiAlaska · Yes$532+$151
lava-lavaMaine · No$519+$347

Value is shares × the current price of the side held. Wallets holding both sides of the same market are left out: their positions cancel and are not a bet. A dash means the cost basis is unknown. Holders are public data; this is not a signal to copy. How to read holders.

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Prediction markets are risky and you can lose your whole stake. Risk disclosure.