U.S. midterm elections (2018)
Democrats won the House and Republicans kept the Senate. Stocks rose the day after the election, and the S&P 500 had its second-biggest post-midterm gain since 1982, according to CFRA data cited by CNN.
Divided government led to investigations of the Trump administration and an impeachment inquiry.
Gridlock limited new legislation, but Democrats gained subpoena power and a platform to contest policy.
The 2026 sweep is larger because Democrats won both chambers, but the market reaction follows the same pattern: clarity and divided government reduce uncertainty.
