Nasdaq 100 futures slide nearly 1.5% as Democratic sweep odds hit 95%

The S&P 500 shed $500 billion in market value as midterm vote counts pointed to a Democratic takeover of Congress Wall Street woke up on November 4, 2026, to an election hangover. Nasdaq 100 futures fell nearly 1.5%, and the S&P 500 lost $500 billion in market value as early midterm counts tilted hard toward Democrats. The trigger was a single number. Prediction markets put the odds of a full Democratic sweep of Congress at about 95%, a sharp jump from where those bets had been sitting before the votes came in. How the selloff unfolded Voters went to the polls on November 3, 2026. Heading in, Republicans controlled both the House and the Senate. By the next morning, that picture was shifting fast. As initial tallies rolled in, equity futures turned lower. S&P 500 futures actually started the session with gains before reversing course. Nasdaq 100 futures took the bigger hit, with declines reported in a range of 0.3% to 1.5% as the session progressed. Around $500 billion in market capitalization pressure was tied to the political shift. Prediction markets told the story in real time. As of early November 4, traders priced a 94% to 98% chance that Democrats would take the ...