Los Angeles Mayor 2026 — Bass vs Raman Runoff

The June 2 jungle primary sent incumbent Karen Bass and City Councilmember Nithya Raman to a November 3 runoff. Rick Caruso, the strongest challenger of the 2022 cycle, did not advance; his legs have settled No on every exchange. Everything else in the ten-name field is resolved too, so all three books have collapsed to the same two-way question.

They agree closely and they are not close: Bass 63.5% / Raman 36.5% on Kalshi, 65.5/35.3 on Polymarket, 65.1/34.8 on Manifold. Kalshi carries $352k in 24-hour volume—more than any other municipal race on the exchange and more than most Senate books—with $261k of it on the Bass leg.

That depth on a mayor's race is the thing worth noticing. Los Angeles is the only city government the exchanges price at Senate-race liquidity, and the reason is the runoff structure: a two-candidate, five-month binary with a fixed date is exactly the shape event contract books trade best.

Kalshi, Polymarket and Manifold on the same two-candidate question. With the full field resolved except Bass and Raman, these pies are effectively binaries and the useful read is the spread between them—currently two points, all of it Kalshi pricing Bass slightly cheaper than the other two.

The two live legs on Kalshi, then the same pair on Polymarket. Bass runs as the incumbent with citywide name recognition; Raman advanced out of a crowded field on Council District turnout and the left flank. A persistent cross-exchange gap on Bass usually reflects different LA County turnout models rather than disagreement about fundamentals—and right now that gap is two points, which is noise.

• A two-candidate binary with a fixed date, and real depth. $352k a day on Kalshi, $20k on Polymarket. This is the most heavily traded municipal race on the board by a wide margin, and the volume is concentrated on the incumbent leg.
• Three exchanges inside two points. Bass at 63.5% Kalshi, 65.5% Polymarket, 65.1% Manifold. When the thin books and the deep book agree this closely there is no spread to trade—the number is just the number.
• Bass versus Raman is incumbency against the left flank. Raman's path runs through turnout, not persuasion; she advanced on Council District organization in a low-turnout primary. A November general with statewide races on the ballot is a different electorate, and that is the structural argument for the 63/37 line rather than something tighter.
• The books will be quiet until September. Nothing between now and the first credible general-election polling moves this. Treat summer rung drift as thin-book noise even at these volumes.
• The whole California ballot moves together. Same-day statewide races and propositions share the turnout model—read this against the California governor workspace.

Los Angeles votes the same day as the statewide races. The California governor workspace carries Becerra at 96% and the statewide propositions; Kalshi's ballot-measure Multiple below prices which measures pass. Municipal turnout in LA is the single largest input into both.