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Polymarket politics markets
Presidential races, congressional control, and confirmation fights are where Polymarket’s political books concentrate liquidity. This hub is a research cut of that tape: the twenty largest open politics markets by lifetime volume, plus the contracts whose implied Yes moved most over the last seven days. Volume is not a forecast — it is a map of where traders already posted size. A 70¢ Yes on a Senate seat is a priced consensus, not a poll. Use the screener for the full politics tab, movers for faster odds, and whale prints when a single fill re-rates a race. Polydata does not execute trades; these pages exist so journalists and researchers can see which political questions actually trade.
As of Oct 7, 2026, the 20 largest open Politics books on Polymarket total $901.46M lifetime volume.
Largest open politics books
Ranked by lifetime volume on the Polydata screener (open books). Yes% is the first outcome price when present. Filtered from the default warmed volume ranking by market tag.
Weekly movers (7d implied Yes)
Liquid open books with a usable reference fill. Δ is percentage points of implied Yes, not a trade signal.
| Market | Yes | 7d Δ | Window vol |
|---|---|---|---|
| Spain snap election called in 2026? | 18% | -9.4 pp | $107.2K |
| Will David Lisnard be on the ballot for the 2027 French presidential election? | 68% | -3.5 pp | $5.8K |
| Will Flávio Bolsonaro win the first round of the 2026 Brazilian presidential election by less than 5%? | 27% | +3.4 pp | $203.4K |
| Will the Democratic Party win the NJ-06 House seat? | 97% | +3.1 pp | $6.1K |
| Will Flávio Bolsonaro finish in second place in the first round of the 2026 Brazilian presidential election? | 74% | +3.0 pp | $1.6M |
| Will the Republican Party win the CA-22 House seat? | 9% | +3.0 pp | $7.9K |
| Will the Democratic Party win the MN-05 House seat? | 94% | -2.5 pp | $7.0K |
| Will the Republican Party win the MO-07 House seat? | 96% | +2.5 pp | $10.9K |
| Will the Republican Party win the NH-01 House seat? | 8% | +2.5 pp | $8.4K |
| Will Partido Liberal (PL) hold the most seats as a result of the next Brazilian Senate election? | 93% | -2.5 pp | $9.8K |
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