Race

U.S. House, California 10th District (2026)

Everyone who filed with the Federal Election Commission for this seat, with what they raised and what outside groups spent.

FEC filings don't record primary results, so this list includes candidates who lost a primary or dropped out. Money is from each campaign's latest FEC report, shown on its page.8

CandidateRaisedSpentCash on handOutside helpOutside opposition
Mark DeSaulnier1DemocratIncumbent$567K$610K$586K$0$0
Katherine Piccinini2RepublicanChallenger$21K$19K$3,851$0$0
Angela Griffiths3RepublicanChallenger$12K$8,594$3,217$0$0
Mitchell David Maisler4DemocratChallenger$10K$11K$-514$0$0
Joshua Hamilton5DemocratChallenger$7,486$6,406$1,080$0$0
Calvin Nguyen6DemocratChallenger$0$0$0$0$0
Jeffrey Frese7RepublicanChallenger$0$0$0$0$0

Sources

Every number on this page points here. Each one links to the public record.

  1. 1
    FEC candidate record: Mark Desaulnierhttps://www.fec.gov/data/candidate/H0CA10073/
    H0CA10073
  2. 2
    FEC candidate record: Katherine Piccininihttps://www.fec.gov/data/candidate/H4CA10109/
    H4CA10109
  3. 3
    FEC candidate record: Angela Griffithshttps://www.fec.gov/data/candidate/H6CA10195/
    H6CA10195
  4. 4
    FEC candidate record: Mitchell David Maislerhttps://www.fec.gov/data/candidate/H6CA10179/
    H6CA10179
  5. 5
    FEC candidate record: Joshua Hamiltonhttps://www.fec.gov/data/candidate/H6CA10161/
    H6CA10161
  6. 6
    FEC candidate record: Calvin Nguyenhttps://www.fec.gov/data/candidate/H6CA10153/
    H6CA10153
  7. 7
    FEC candidate record: Jeffrey Fresehttps://www.fec.gov/data/candidate/H6CA10187/
    H6CA10187
  8. 8
    Federal Election Commission bulk data, 2025–26 cyclehttps://www.fec.gov/data/browse-data/?tab=bulk-data
    Retrieved October 16, 2026 · Public record