Will the Republican Party control the House after the 2026 Midterm elections?

Analysis

All 7 agents converge tightly (12-16%, std dev 1.7%) on Republican House retention probability around 13-14%. This is one of the strongest consensus readings possible. The evidence is clear and mutually reinforcing: (1) historical base rates strongly favor the opposition party in midterms, (2) Republicans' narrow majority makes them structurally vulnerable, (3) the complementary Democratic market at 82% is consistent with ~14-18% Republican probability (accounting for small probability of neither party controlling). The market price at 14.5% is essentially aligned with both the ensemble mean (13.7%) and the complementary market implied probability. The edge is less than 1 percentage point, far below the 5% threshold needed for a trade. No agent found specific evidence that would justify deviating significantly from the market price. While the historical and structural evidence clearly points toward Democratic takeover, this is already fully priced in. The 18-month time horizon introduces substantial uncertainty that appropriately keeps this above single digits.

View on Polymarket