Wiener leads Chan in every poll, mostly within margin of error

Bar chart of support for Scott Wiener and Connie Chan in four polls from June to October 2026 and in the June primary for California's 11th District, with bands showing each poll's margin of error of 4.4 to 5.2 points. Wiener is ahead in every poll, by 1 to 11 points, but the two candidates' margin-of-error bands overlap in every poll result except the Wiener-sponsored poll without leaners, where he leads 45% to 34%. Wiener received 40.7% of the primary vote to Chan's 29.7%.

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"With leaners" counts undecided voters pushed to choose; the independent poll was conducted by USC, the Chan poll was sponsored by her campaign, the Wiener poll by a pro-Wiener Super PAC and the citywide poll by a pro-Prop. I group.
Sources: USC, Tavern Research, Lake Research Partners, Public Policy Polling, primary results