S&P 500 around US midterm elections, 1950-2022, plus 2026 so far

All 19 midterms, 90 days before to 180 days after, each rebased to 100 at the election-day close. 2026 (lime) is rebased to its latest close, Fri Oct 30 2026 (4 days before the Nov 3 vote). One colour per year (key on the right, red 1950 through purple 2022); hover a line for its year. White solid = average, white dashed = median (of the 19 past years).

source: Yahoo Finance ^GSPC daily close (S&P 90 before Mar 1957) • transform: price only, no dividends; each day uses the last close on or before it; 1950-1966 markets were shut on election day, so the day-before close is used • drawn 2026-11-02 00:07 UTC