Democrats have reached record Kalshi odds for controlling both chambers of Congress, with traders pricing a 57% chance of Senate control and an 89% chance of House control. The market moves follow Quinnipiac polling showing Democrats leading Republicans 49% to 38% on the generic congressional ballot, while public polling across 10 Senate battlegrounds remains mixed. Democrats need to gain at least four Senate seats to overcome Republicans' six-seat advantage, with early voting underway in Virginia and both parties preparing major spending before Nov. 3.