Which party will win the Senate in 2026?

Polymarket

Latest Odds

Republicans
53.50%
Democrats
46.50%
PolymarketMay 31st 2026

Historical Data

DateCandidateOdds
May 30th 2026Republicans53.50%
Democrats46.50%
May 29th 2026Republicans53.50%
Democrats46.50%
May 28th 2026Republicans53.50%
Democrats47.50%
May 27th 2026Republicans52.50%
Democrats48.50%
May 26th 2026Republicans51.50%
Democrats47.50%
May 25th 2026Republicans51.50%
Democrats47.50%
May 24th 2026Republicans51.50%
Democrats47.50%
May 23rd 2026Republicans52.50%
Democrats47.50%
May 22nd 2026Republicans52.50%
Democrats47.50%
Odds Snapshot
2026Midterms
House
DEM76¢
+51.0vs GOP
Senate
GOP57¢
+13.0vs DEM
2028Presidential
President
Vance19¢
+2.0vs Newsom
Dem Nom
Newsom24¢
+12.7vs AOC
GOP Nom
Vance34¢
+5.9vs Rubio
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Which party will win the Senate in 2026?