Daily market report
Election markets on Thursday, September 17, 2026
Democrats ended the day 59% to win the Senate (Democratic odds up 1.7 points) and 89% to win the House (Democratic odds up 1.0 points); the biggest move was CO-04 (Colorado), where Democratic odds went from 19% to 31%.
Kalshi and Polymarket, averaged · times in UTC days
Biggest moves
| Race | Start of day | End of day | Change (D) |
|---|---|---|---|
| CO-04 (Colorado) | D 19% | D 31% | ▲ 11.9 |
| FL-27 (Florida) | D 19% | D 26% | ▲ 6.5 |
| Texas Governor | D 17% | D 23% | ▲ 6.1 |
| NE-01 (Nebraska) | D 14% | D 19% | ▲ 5.8 |
| AZ-02 (Arizona) | D 29% | D 33% | ▲ 3.8 |
| MN-01 (Minnesota) | D 19% | D 22% | ▲ 3.7 |
| MO-05 (Missouri) | D 95% | D 92% | ▼ 3.4 |
| OH-02 (Ohio) | D 6% | D 2% | ▼ 3.3 |
| KS-02 (Kansas) | D 8% | D 11% | ▲ 3.2 |
| TX-16 (Texas) | D 95% | D 98% | ▲ 3.1 |
