How the 2026 midterms could affect stocks—and what investors should do
Midterm years can be volatile, but historical S&P 500 data suggests party control matters less than the economy, earnings and Fed policy.
TL;DR
- Polls and prediction markets suggest a potential "blue wave" in the 2026 midterms, which could shift control of Congress.
- However, historical data indicates that political party control has little impact on stock market returns, with economic factors being more influential.
- Midterm election years tend to be the most volatile within a presidential term but are often followed by significant market rebounds.
- A split Congress, where different parties control the House and Senate, has historically shown the best performance for the stock market, partly due to legislative gridlock limiting federal spending.
- Investors are advised against making decisions based on election outcomes and instead should focus on consistent, diversified investing.