Direct Contributions to Candidates

Candidates must disclose large donors if they give $100 or more over the course of the campaign. Small donors give less than $100; we have excluded them from the contributor table. Click on a candidate below to see their contributors.

  • Self-funded
  • Large donors
  • Small donors
CandidatePartyContributionsTotal
Tom Umberg T. UmbergD, Democratic Party
$615K▶
Martín Arias M. AriasD, Democratic Party
$290K▶
Denis Bilodeau D. BilodeauR, Republican Party
$163K▶
Cody Petterson C. PettersonD, Democratic Party
$32.7K▶
Gardner C. Osborne G. OsborneL, Libertarian Party
$3.4K▶
Small donors
$NaN
Self-funded
$NaN
ContributorTotal
Independent Expenditures

Groups not coordinating with candidates must report money they spend to influence elections.

CandidatePositionSpenderAmount
Tom UmbergSupportJobspac A Bi Partisan Coalition Of California Employers Sponsored By The California Chamber Of Commerce$100K
Tom UmbergSupportSan Diego Labor Coalition Sponsored By Laborers International Union Of North America Local 89$3.6K
Tom UmbergSupportAdvance California Sponsored By California Apartment Association And California Life Sciences$16.2K
Tom UmbergSupportAdvance California Sponsored By California Apartment Association$215K
  • Note: Candidate contributions listed above do not include transfers from a candidate’s previous campaign committee for a different race. Candidates not listed above have not reported any contributions. Data was last updated on Monday, September 28, 2026.
  • Source: California Secretary of State