Aggregator snapshot (DeFi Rate, 11:14 PM ET): Dems slid this week on the Senate board

Democratic control probabilities declined across three congressional markets in a DeFi Rate aggregator snapshot taken at 11:14 PM ET. The update, published Oct 9, 2026 · 11:54 PM ET, showed lower readings for Senate control, Michigan’s Senate race and House control.

Congressional probabilities ease

The probability of Democrats controlling the Senate fell from 65% to 62% this week, a decline of 3 percentage points, according to DeFi Rate.

Michigan’s Democratic Senate probability dropped from 72% to 68%, down 4 percentage points. That was the largest decline among the three congressional readings in the summary.

Democratic House control moved from 92% to 90%, a 2-percentage-point decrease. Despite those declines, all three congressional probabilities remained above 50%.

2028 readings hold steady

The probability of a Democratic win in 2028 remained at 61%, according to DeFi Rate. JD Vance’s GOP reading also held at 46%; the supplied summary does not specify the precise contract behind that figure.

The source page text was unavailable, leaving the snapshot without further detail on market definitions or the reasons for the changes.

What it means for prediction markets

• The congressional moves point in the same direction, but differ in size: Michigan fell 4 percentage points, Senate control 3 and House control 2.
• Democratic House control remained the highest-probability outcome among the congressional readings, at 90%.
• The unchanged 2028 figures contrast with the congressional declines. Without contract details or additional reporting, the snapshot does not establish what drove that divergence.