Who will win the San Francisco District 10 Board of Supervisors seat in the November 3, 2026 general election?

rationale:

Ten candidates have qualified for the open San Francisco District 10 Board of Supervisors seat to succeed term-limited Shamann Walton sf.gov. The race is defined by three main contenders: Theo Ellington, Dion-Jay Brookter, and J.R. Eppler. San Francisco utilizes single-winner ranked-choice voting (RCV) for Board of Supervisors elections sf.gov, meaning the first-round plurality leader could be overtaken if later-round transfers consolidate behind a consensus alternative. However, stark financial and institutional disparities have established a clear frontrunner.

Theo Ellington is the distinct favorite, buoyed by overwhelming financial and institutional support. He secured the sole San Francisco Democratic Party (DCCC) endorsement for D10 in July 2026 3 sources and enjoys backing from a broad moderate and establishment coalition, including state officials, former mayors, and key labor unions 2 sources. Financially, Ellington's position is dominant: as the first candidate certified for public financing, he has amassed roughly $472,000 campaign.sfethics.org, far outpacing his rivals. Furthermore, well-funded moderate independent expenditure groups are expected to spend heavily in his favor sfexaminer.com. Additionally, Ellington’s deep roots as a Bayview native position him well in a district that has consistently elected African-American supervisors since district elections began in 2000 2 sources.

Dion-Jay Brookter is the primary progressive alternative, bolstered by the endorsement of outgoing Supervisor Walton and a coalition of progressive leaders 3 sources. However, his path is severely constrained by a dire financial situation—having raised roughly $69,000 and spent nearly all of it—and the lack of an endorsement from the SF Labor Council, denying him crucial union consolidation 3 sources. J.R. Eppler is the strongest geographically-based candidate, drawing robust support from Potrero Hill, Dogpatch, and neighborhood merchants, alongside the Sierra Club’s #1 ranking 2 sources. While Eppler’s fundraising is healthier at around $150,000 campaign.sfethics.org, his demographic and geographic ceiling limits his upside. A Potrero-based plurality would likely struggle against Bayview-centered consolidation in later RCV rounds beyondchron.org.

The primary risks to an Ellington victory lie in the mechanics of RCV and the complete absence of public polling. Brookter could theoretically pull off an upset if late independent backing materializes and he successfully consolidates progressive and minority voters in secondary RCV transfers sfstandard.com. Eppler's narrower path depends on exceptionally high turnout in Potrero and Dogpatch coupled with a fractured Bayview vote beyondchron.org. However, Ellington is likely a common second choice for voters in both the progressive Bayview and moderate Potrero blocs, which severely blunts the potential for an "everyone-but-Ellington" coalition to overtake him.

The remaining seven candidates hold negligible probabilities. None have demonstrated meaningful fundraising, institutional backing, or district-wide campaign infrastructure 3 sources, though figures like Jessica Pessecow and Shawn M. Richard maintain minor grassroots visibility davisvanguard.org. It is also worth noting a technicality regarding the candidate listed as "Jameel Patterson" in the resolution criteria; official election records and the final ballot list this individual as "Jamo Muhammad" sf.gov. Treating them as the same under-resourced candidacy, they and the rest of the minor field possess virtually zero chance of victory.