Overview
- State Sen. Scott Wiener held a clear early lead over Supervisor Connie Chan in returns reported by San Francisco Elections after Tuesday's vote, with outlets showing roughly 55% for Wiener to 45% for Chan.
- Wiener's advantage reflected stronger fundraising, larger independent expenditures tied to tech interests, and late-day swings in prediction markets that shifted odds in his favor.
- Chan faces a narrowing path to victory because she would need a large late surge to erase Wiener's margin even though San Francisco's later-counted ballots have in past cycles boosted progressive candidates.
- The race sharpened policy contrasts despite shared progressive goals, with Chan calling for a moratorium on new AI data centers and more public housing while Wiener opposes a blanket moratorium and favors enforceable AI safety and transparency rules and faster housing production.
- Counting will continue over the coming days and the final outcome will decide who represents San Francisco in Congress and could signal which faction of the city's Democratic coalition will lead on issues like AI, housing and campaign finance.