CA-12
California District 12
Tue, Nov 3 · Seat held by Lateefah Simon Democratic since Jan 2025
Jamie JoyceDemocraticLateefah SimonDemocratic · IncumbentAge 49 · 1 year in Congress
No published poll names both candidates.Last result · 2024 general: Lateefah Simon (D) 65.4, Jennifer Tran (D) 34.6
- Last election
- Lateefah Simon (Democratic) won by 30.8 points, 2024
- On the 2026 ballot
- 2 candidates
Side by side
Joyce left, Simon right- Total receipts, 2025-2026 cycle, through Oct 14
- $70K
- $1.7M
- Cash on hand
- $5K
- $726K
- Donor-based spectrum
- LiberalCentristConservativeSimonNo published score for Joyce
- Record
- None on file
- 1-0
- Years in politics
- Not available
- 1
- Age on Election Day
- Not available
- 49
Jamie Joyce on fec.gov. Lateefah Simon on fec.gov. One or more are matched to the FEC by name, party and seat, so a total could belong to someone else.
How these are counted
Total receipts line of each candidate’s principal campaign committee, 2025-2026 cycle. Other sites may show career, six-year or all-committee totals, which differ. The spectrum is a published research score, not our rating. How this works. Record is wins and losses in the races in our results files, the same count as each profile.
More about this race
Candidates on the ballot
- Jamie JoyceDemocraticNonprofit Executive Director
- Lateefah SimonIncumbentDemocraticU.S. Representative
Source: elections.cdn.sos.ca.gov (PDF), dated Aug 27
Shift since 2022: not available. Two same-party candidates took 10 percent or more in one year, so no D versus R margin change.
All California districts
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2024 US House margin
- D 15+ pts
- D 5 to 15 pts
- D under 5 pts
- R under 5 pts
- R 5 to 15 pts
- R 15+ pts
- Other winner
- No data
Show these districts as a list (52)
- California District 1· New lines for 2026, old result not shown
- California District 2· New lines for 2026, old result not shown
- California District 3· New lines for 2026, old result not shown
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- California District 10· New lines for 2026, old result not shown
- California District 11· Nancy Pelosi (D), Democratic by 62.0 points, 2024
- California District 12· Lateefah Simon (D), Democratic by 30.8 points, 2024
- California District 13· New lines for 2026, old result not shown
- California District 14· New lines for 2026, old result not shown
- California District 15· Kevin Mullin (D), Democratic by 46.2 points, 2024
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- California District 19· Jimmy Panetta (D), Democratic by 38.6 points, 2024
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- California District 34· Jimmy Gomez (D), Democratic by 11.2 points, 2024
- California District 35· New lines for 2026, old result not shown
- California District 36· Ted Lieu (D), Democratic by 37.4 points, 2024
- California District 37· Sydney Kamlager-Dove (D), Democratic by 56.6 points, 2024
- California District 38· New lines for 2026, old result not shown
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- California District 43· Maxine Waters (D), Democratic by 50.2 points, 2024
- California District 44· New lines for 2026, old result not shown
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- California District 50· New lines for 2026, old result not shown
- California District 51· New lines for 2026, old result not shown
- California District 52· New lines for 2026, old result not shown
Map settings
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Official results for California
History (25 elections for this seat)
- Votes for listed candidates
- 283,025
- Election day
- November 5, 2024
- District map
- Same as today
US House, California District 12, 2024, every candidate Candidate Party Votes and share Share DemocraticLateefah SimonWon Democratic 185,17665.4% DemocraticJennifer Tran Democratic 97,84934.6% - Votes for listed candidates
- 239,969
- Election day
- November 8, 2022
- District map
- Same as today
US House, California District 12, 2022, every candidate Candidate Party Votes and share Share DemocraticBarbara LeeWon Democratic 217,11090.5% RepublicanStephen Slauson Republican 22,8599.5% - Votes for listed candidates
- 362,950
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2020)
US House, California District 12, 2020, every candidate Candidate Party Votes and share Share DemocraticNancy PelosiWon Democratic 281,77677.6% DemocraticShahid Buttar Democratic 81,17422.4% - Votes for listed candidates
- 317,072
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2020)
US House, California District 12, 2018, every candidate Candidate Party Votes and share Share DemocraticNancy PelosiWon Democratic 275,29286.8% RepublicanLisa Remmer Republican 41,78013.2% - Votes for listed candidates
- 338,845
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2020)
US House, California District 12, 2016, every candidate Candidate Party Votes and share Share DemocraticNancy PelosiWon Democratic 274,03580.9% IndependentPreston Picus Independent 64,81019.1% - Votes for listed candidates
- 192,264
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2020)
US House, California District 12, 2014, every candidate Candidate Party Votes and share Share DemocraticNancy PelosiWon Democratic 160,06783.3% RepublicanJohn Dennis Republican 32,19716.7% - Votes for listed candidates
- 298,187
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2020)
US House, California District 12, 2012, every candidate Candidate Party Votes and share Share DemocraticNancy PelosiWon Democratic 253,70985.1% RepublicanJohn Dennis Republican 44,47814.9% - Votes for listed candidates
- 201,162
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2010)
US House, California District 12, 2010, every candidate Candidate Party Votes and share Share DemocraticJackie SpeierWon Democratic 152,04475.6% RepublicanMike Moloney Republican 44,47522.1% LibertarianMark Paul Williams Libertarian 4,6112.3% OtherJoseph Michael Harding Other 320.0% - Votes for listed candidates
- 266,853
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2010)
US House, California District 12, 2008, every candidate Candidate Party Votes and share Share DemocraticJackie SpeierWon Democratic 200,44275.1% RepublicanGreg Conlon Republican 49,25818.5% OtherNathalie Hrizi Other 5,7932.2% GreenBarry Hermanson Green 5,7762.2% LibertarianKevin Dempsey Peterson Libertarian 5,5842.1% - Votes for listed candidates
- 182,324
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2010)
US House, California District 12, 2006, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 138,65076.0% RepublicanMike Moloney Republican 43,67424.0% - Votes for listed candidates
- 252,599
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2010)
US House, California District 12, 2004, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 171,85268.0% RepublicanMike Garza Republican 52,59320.8% GreenPat Gray Green 23,0389.1% LibertarianHarland Harrison Libertarian 5,1162.0% - Votes for listed candidates
- 154,984
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2010)
US House, California District 12, 2002, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 105,59768.1% RepublicanMichael Moloney Republican 38,38124.8% LibertarianMaad H Abu-Ghazalah Libertarian 11,0067.1% - Votes for listed candidates
- 212,556
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2000)
US House, California District 12, 2000, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 158,40474.5% RepublicanMike Garza Republican 44,16220.8% LibertarianBarbara J Less Libertarian 6,4313.0% OtherRifkin Young Other 3,5591.7% - Votes for listed candidates
- 173,212
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2000)
US House, California District 12, 1998, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 128,13574.0% RepublicanRobert H Evans Republican 36,56221.1% LibertarianMichael J Moloney Libertarian 8,5154.9% - Votes for listed candidates
- 207,908
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2000)
US House, California District 12, 1996, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 149,04971.7% RepublicanStorm Jenkins Republican 49,27623.7% LibertarianChristopher Va Schmidt Libertarian 6,1112.9% OtherRichard Borg Other 3,4721.7% - Votes for listed candidates
- 175,636
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2000)
US House, California District 12, 1994, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 118,40867.4% RepublicanDeborah Wilder Republican 57,22832.6% - Votes for listed candidates
- 228,407
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2000)
US House, California District 12, 1992, every candidate Candidate Party Votes and share Share DemocraticTom LantosWon Democratic 157,20568.8% RepublicanJim Tomlin Republican 53,27823.3% OtherMary Weldon Other 10,1424.4% LibertarianGeorge L O'Brien Libertarian 7,7823.4% - Votes for listed candidates
- 205,698
- Election day
- November 6, 1990
- District map
- Older district map (1982 to 1990)
US House, California District 12, 1990, every candidate Candidate Party Votes and share Share RepublicanTom CampbellWon Republican 125,15760.8% DemocraticRobert Palmer Democratic 69,27033.7% LibertarianChuck Olson Libertarian 11,2715.5% - Votes for listed candidates
- 263,930
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1990)
US House, California District 12, 1988, every candidate Candidate Party Votes and share Share RepublicanTom CampbellWon Republican 136,38451.7% DemocraticAnna G Eshoo Democratic 121,52346.0% LibertarianTom Grey Libertarian 6,0232.3% - Votes for listed candidates
- 187,043
- Election day
- November 4, 1986
- District map
- Older district map (1982 to 1990)
US House, California District 12, 1986, every candidate Candidate Party Votes and share Share RepublicanErnest L KonnyuWon Republican 111,25259.5% DemocraticLance T Weil Democratic 69,56437.2% LibertarianBill White Libertarian 6,2273.3% - Votes for listed candidates
- 252,693
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1990)
US House, California District 12, 1984, every candidate Candidate Party Votes and share Share RepublicanEd ZschauWon Republican 155,79561.7% DemocraticMartin Carnoy Democratic 91,02636.0% LibertarianBill White Libertarian 5,8722.3% - Votes for listed candidates
- 183,208
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1990)
US House, California District 12, 1982, every candidate Candidate Party Votes and share Share RepublicanEd ZschauWon Republican 115,36563.0% DemocraticEmmett Lynch Democratic 61,37233.5% LibertarianBill White Libertarian 6,4713.5% - Votes for listed candidates
- 199,083
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1980)
US House, California District 12, 1980, every candidate Candidate Party Votes and share Share RepublicanPaul N "Pete" McCloskey JrWon Republican 143,81772.2% DemocraticKirsten Olsen Democratic 37,00918.6% LibertarianBill Evers Libertarian 15,0737.6% OtherAdele Fumino Other 3,1841.6% - Votes for listed candidates
- 160,085
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1980)
US House, California District 12, 1978, every candidate Candidate Party Votes and share Share RepublicanPaul N McCloskey JrWon Republican 116,98273.1% DemocraticKirsten Olsen Democratic 34,47221.5% OtherHarold R Boylan Other 5,6093.5% OtherAdele Fumino Other 3,0221.9% - Votes for listed candidates
- 196,857
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1980)
US House, California District 12, 1976, every candidate Candidate Party Votes and share Share RepublicanPaul N "Pete" McCloskey JrWon Republican 130,33266.2% DemocraticDavid Harris Democratic 61,52631.3% OtherJoseph David Cooney Other 4,9992.5%
All rows: MIT Election Data and Science Lab, U.S. House 1976-2024, retrieved Oct 28, 2026
District numbers are reused after each redistricting, so rows on older lines cover different territory than today's California District 12.
Download and cite
Cite this page
Election Wrld. (2026). California District 12, US House results. https://www.electionwrld.com/ca/congress/12. Retrieved October 30, 2026.
Embed this seat
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Sources
Sources
- Used for
- web/data/results/house/{ST}.json. The Dataverse API refuses this file behind a guestbook, so the identical file was taken from two public GitHub copies (Hackquantumcpp/snoutcounter-midterms-2026-model data/1976-2024-house.csv and sta199-f26/sta199-f26.github.io _data/gerrymander/1976-2024-house.tab), which are byte-identical to each other and match the md5 a9566ac393913a1af343284e837c17bb that Dataverse lists for dataset version 15.0 (2026-03-09). sha256 76eec42483ee9f0fc5cf6e377442c783d1ae6eefa929729fd6561a69bab47f2a.
- License
- CC0 1.0
- Retrieved
- October 28, 2026
- Link
- https://doi.org/10.7910/DVN/IG0UN2
- Used for
- cd.topo.json, sld/*.topo.json
- License
- US Census Bureau, public domain
- Retrieved
- October 28, 2026
- Link
- https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Legislative/MapServer
- Used for
- web/data/officials/congress.json (name, party, bioguide, official site, service start) and web/data/people (birth year, committees, social media handles and profile links; links only, nothing copied from the platforms). As-of: the files saved in data/raw/people on 2026-10-29.
- License
- CC0-1.0
- Retrieved
- October 28, 2026
- Link
- https://unitedstates.github.io/congress-legislators/legislators-current.json
DataState data (JSON)Sources: MIT Election Data and Science Lab, U.S. House 1976-2024, FEC, DIME (ODC-BY), Portraits: unitedstates/images (public domain)Data as of Oct 28, 2026