Wall Street Braces for Volatility Ahead of US Midterms
Investors anticipate stock market volatility as the November 3 midterm elections could shift control of Congress to Democrats and impact AI regulations.
Wall Street investors are preparing for potential stock market volatility ahead of the United States midterm elections on November 3, 2026. Market analysts suggest stocks may decline if the Democratic Party regains control of both the House of Representatives and the Senate, as a Democratic sweep could lead to increased regulations that might slow the artificial intelligence boom.
Prediction market Polymarket indicates a 63% probability that Democrats will retake both chambers and a 29% chance they will retake only the House. While Republicans currently hold slim majorities in both houses, historical data from 1926 to 2023 shows that a Republican president overseeing a divided Congress has been the worst-case scenario for the stock market, with the S&P 500 averaging a 7.33% annual return.
Despite these concerns, some analysts argue that a legislative stalemate could provide predictability for investors. Furthermore, President Donald Trump will maintain veto power, which would prevent Democrats from implementing tax increases or new regulations unless they secure enough seats to override a veto. Other historical perspectives suggest resilience, noting the S&P 500 has risen in the 12 months following every midterm election since World War II.
