SIG-116 politics SHADOW 🕶 SHADOW

2026 Balance of Power: R Senate, R House

Direction YES underpriced · Confidence LOW · Closes 2026-11-03

Market price

20%

at signal

Our estimate

21%

calibrated

Gap

+0.7pp

market vs ours

Status

SHADOW

2026-11-03 close

Market price history

Evidence

Midterm elections historically punish the president's party - the in-power party has lost House seats in 19 of 21 midterms since 1934.
Republicans hold a narrow House majority entering 2026, making it structurally vulnerable to even modest swings.
Senate 2026 map has GOP defending more competitive seats (e.g., NC, ME) than Democrats, limiting upside.
Presidential approval and economic conditions in mid-2026 are uncertain 178 days out, adding variance to either direction.
Polymarket pricing of ~20% aligns with prediction-market consensus and historical base rates for unified government retention in midterms.

Counter-evidence

Strong economy, redistricting gains, or a major Democratic scandal could push the true probability higher than 20%, but no specific catalyst justifies a >20pp deviation.