Midterm elections May influence stock market performance in 2026

Midterm elections in 52 days could influence the 2026 stock market. Republicans currently hold a unified government with 53 Senate seats and 218 House seats. A 51% chance of Democrats winning both houses was reported by Polymarket on Sept. 9.

Historical data shows midterm years bring a 17.5% intra-year correction on average, and year six of a second-term presidency has delivered a nearly 21% gain in the S&P 500. The S&P 500 was up 11.6% year-to-date through the closing bell on Sept. 9.

If the trend continues, political gridlock may be seen as a positive for investors, and the AI infrastructure build-out will support a strong bull market. History suggests midterm elections are unlikely to trigger a plunge, but they could shape market performance.

Read the full story at finance.yahoo.com.