Politics odds

Top politics markets by 24h volume

How election prediction markets work

Elections are close to ideal for prediction markets: the date is known years in advance, the outcome is binary (someone wins or doesn't), and there's a constant firehose of information — polls, debates, fundraising numbers, early voting data. That steady information flow means prices update continuously, rewarding people who process news well. It's no accident that Polymarket's biggest volume spikes have come during major election cycles.

Beyond the headline winner market you'll see electoral-college and individual state markets, legislative control (which party takes the House, Senate, or parliament), nominee markets — which run long, swing wildly on single news events, and are where informed political junkies have historically found the most mispricing — and policy and approval markets.

Polls vs. prices: how to read both

Polls are snapshots with error bars — a poll showing a candidate up 3 points really means "somewhere between down 2 and up 8, with methodological quirks." Market prices aggregate polls with everything else: fundraising, historical patterns, on-the-ground reporting, and the judgment of people risking money. When polls and prices disagree, ask why instead of picking a side reflexively — the disagreement itself tells you where the uncertainty lives.

Timing: debates and election night

Prices grind on polls for months, then explode around events. Debate bounces historically fade within days — buying the spike is usually buying the top. Election night is chaos: early results mislead, prices whipsaw on partial counts, and spreads widen. It's the most exciting and least profitable time for beginners to trade. Watching is free; trading is expensive. For the Senate races specifically, see the 2026 Senate races index.

New here? Start with the complete beginner guide, then run any stake through the payout calculator before you trade.