Weekly Candidate Update

House, Senate & Governor Races — May 18, 2026

Hi everyone,

This week's candidate refresh is live on quarex.org. Notable activity is concentrated in late-primary states where filing windows are still active — and a wave of post-deadline cleanup in states whose filing has closed.

This week's movement: 19 states with changes — House +49 / −27 (15 states), Senate +0 / −19 (4 states), Governor +1 / −10 (5 states).

The full week-over-week diff is live at quarex.org/reports/election/2026-candidate-changes.html.

Notable House moves

Notable Senate moves

Notable Governor moves

Coverage

Federal totals stand at 441 House districts, 33 Senate races, and 39 Governor races across all 50 states, DC, and the five inhabited territories — same as last week. The full database is searchable at quarex.org/libraries under Politician Research, and through Quarex Compose.

Under the hood: We hardened the scrape pipeline this week. The Ballotpedia downloader now uses Chrome (msedgedriver had been throwing intermittent failures after Edge auto-updates), each state runs in its own subprocess with a 120-second timeout so one hung page can't crash a whole run, and downloads are now validated for completeness before AI parsing begins. The full 56-jurisdiction pull, which had been our flakiest weekly step, is now reliable end-to-end.

— Peter