The US Politics lobby is the largest on the platform by volume and active users. 563 markets live across Kalshi and Polymarket, with $8.1M in trading volume and $7.7M in open interest — the deepest political prediction market feed available anywhere in one view.

The dominant story right now is the 2026 midterms. Democrats are priced at 86% to win the House on Polymarket — the single highest-volume market on this lobby at $4.5M — and 56% to take the Senate. The "blue tsunami" market (Democrats winning both chambers with large margins) sits at 49%, essentially a coin flip.

Looking further out, the 2028 presidential race is already live: Democrats lead 61% to 39% for the party win, with individual nomination markets open for both sides.

Prices update in real time as news breaks. This is the most active political prediction market feed available in one place.