a weak prior

n. a starting belief held loosely enough for the data to move it

2026 midterms

Democrats are 90% to win the House.

A joint model of every House, Senate and governor race, fitted to Kalshi and Polymarket order books.

House
90% D
236 D seats90%: 212–263
Senate
62% D
51 D seats90%: 47–56
Governors
67% D
27 D governors90%: 21–32

Chance Democrats win each chamber, or hold more governorships than Republicans. Seat counts are medians.

House districts as equal hexagon groups, coloured by projected margin
R+20D+20 Every seat at equal size, coloured by projected margin; tap one to open it. Below: Democratic seats won, 218 for a majority.
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Election Atlas

How each demographic group voted, estimated from counties down to Census block groups.

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