All editions

Week of 2026-10-08 to 2026-10-15

The House price did not move a tick in eight days. Democrats closed at 90.50% every day from October 8 to October 15, while the two House books took USD 2.33M of new money.

Week of 2026-10-01 to 2026-10-08

The Senate book hit its series high and still ended below it. It touched 67.50% late on October 4, the highest since the series began on April 14, and closed Thursday at 63.50%: up 1.00pp on…

Week of 2026-09-24 to 2026-10-01

Three national pollsters finished fieldwork this week and landed twelve points apart. Angus Reid has Democrats ahead by 14, Quinnipiac by 12, and Harvard/Harris by 2, with its full registere…

Week of 2026-09-17 to 2026-09-24

Both chambers moved three points toward Democrats, and both pairs closed at exactly 100.00%. Senate control reads 62.50%, House control 92.50%, and the moves survive normalization unchanged.

Week of 2026-09-10 to 2026-09-17

The Senate moved most and moved fast. Democratic control rose 7.00pp on the week, to 59.50%, the highest that series holds since April 14, most of it on September 15 between 15:00 and 19:30…

Week of 2026-09-03 to 2026-09-10

The two chambers pulled apart. Democratic control of the House fell 3.00pp on the week, to 86.50%, a point above its series floor. Democratic control of the Senate rose 1.00pp, to 52.50%. Th…

Week of 2026-08-27 to 2026-09-03

The point moved instead of being added. Democratic control rose 1.00pp in each chamber, to 89.50% in the House and 51.50% in the Senate, and each Republican price fell 1.00pp. Last week both…

Week of 2026-08-20 to 2026-08-27

Both Democratic prices held still. House control sits at 88.50% and Senate control at 50.50%, the same numbers as last Thursday. Both Republican prices rose 1.00pp.

Week of 2026-08-13 to 2026-08-20

The chambers split. Democrats to control the Senate fell 2.00pp to 50.50%; to control the House they rose 1.00pp to 88.50%.

Week of 2026-08-06 to 2026-08-13

Senate: Democrats went from 44.50% to 52.50% in seven days, crossing 50% on August 11. That is the highest print in the series we hold, which opens on May 16.

Week of 2026-07-30 to 2026-08-06

Prediction market: House Democrats hit 87.50%, the highest print since this series opened on July 29, up 2.00pp in three days. The Republican side of that book has never moved.