California District 48
Tue, Nov 3 · Sitting member, elected on the old lines Darrell Issa Republican since Jan 2021 (not a candidate in 2026)
Jim Desmond 39.0Marni von Wilpert 47.5
Average of 2 polls, Oct 1 to Oct 28, from VoteHub · how it’s calculated
Newest poll
Newest · University of Southern California Democracy and Fair Elections Lab, field dates Oct 22 to Oct 28, released Oct 30, 474 likely votersPoll sponsored by University of Southern California Center for the Political FuturePolls fetched Oct 30, 2:02 a.m. ET, from VoteHub
- Lines for 2026
- Redrawn. 67.6% of residents were in a different district in 2024
- On the 2026 ballot
- 2 candidates, open seat
Polls over time
3 polls, through Election Day Nov 3The thick line is the 7-week average, not a forecast. How it’s calculated. All polls. Polls fetched Oct 30, 2:02 a.m. ET, from VoteHub.
The polls in this chart (3)
1 poll released in the last 14 days · latest results range from 45 to 48% (D) and 38 to 42% (R) (newest 3 polls on the chart)
3 of the 3 polls for this race, each with both names, plotted on the field end date.
| Pollster | Field dates | Released | Sample | Wilpert | Desmond |
|---|---|---|---|---|---|
| University of Southern California Democracy and Fair Elections Lab | Oct 22 to Oct 28 | Oct 30 | 474 likely voters | 48 | 40 |
| SurveyUSA | Oct 1 to Oct 7 | Oct 9 | 518 likely voters | 47 | 38 |
| SurveyUSA | Aug 27 to Sep 1 | Sep 4 | 522 likely voters | 45 | 42 |
Side by side
Left column: DesmondRight column: Wilpert
- Total receipts, 2025-2026 cycle, through Oct 14
- $3.2M
- $5.0M
- Cash on hand
- $718K
- $659K
Money: FEC bulk data, through Oct 14. 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. Desmond: $3,177,972 received, $717,518 cash on hand. Wilpert: $4,966,576 received, $659,136 cash on hand.
What changed in this race
Newest firstNEW POLLCalifornia District 48
California District 48: Marni von Wilpert 52, Jim Desmond 44
University of Southern California Democracy and Fair Elections Lab, Oct 22 to Oct 28, 474 likely voters
More about this race
Candidates on the ballot
Open seat
The current holder, Darrell Issa, is not on the candidate list.
- Marni von WilpertDemocraticCouncilwoman/Health Advocate
- Jim DesmondRepublicanSan Diego County Supervisor
Source: elections.cdn.sos.ca.gov (PDF), dated Aug 27
All California districts
- 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
- California District 4· New lines for 2026, old result not shown
- California District 5· New lines for 2026, old result not shown
- California District 6· New lines for 2026, old result not shown
- California District 7· New lines for 2026, old result not shown
- California District 8· New lines for 2026, old result not shown
- California District 9· New lines for 2026, old result not shown
- 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
- California District 16· New lines for 2026, old result not shown
- California District 17· New lines for 2026, old result not shown
- California District 18· New lines for 2026, old result not shown
- California District 19· Jimmy Panetta (D), Democratic by 38.6 points, 2024
- California District 20· New lines for 2026, old result not shown
- California District 21· New lines for 2026, old result not shown
- California District 22· New lines for 2026, old result not shown
- California District 23· New lines for 2026, old result not shown
- California District 24· New lines for 2026, old result not shown
- California District 25· New lines for 2026, old result not shown
- California District 26· New lines for 2026, old result not shown
- California District 27· New lines for 2026, old result not shown
- California District 28· New lines for 2026, old result not shown
- California District 29· New lines for 2026, old result not shown
- California District 30· New lines for 2026, old result not shown
- California District 31· New lines for 2026, old result not shown
- California District 32· New lines for 2026, old result not shown
- California District 33· New lines for 2026, old result not shown
- 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
- California District 39· New lines for 2026, old result not shown
- California District 40· New lines for 2026, old result not shown
- California District 41· New lines for 2026, old result not shown
- California District 42· New lines for 2026, old result not shown
- California District 43· Maxine Waters (D), Democratic by 50.2 points, 2024
- California District 44· New lines for 2026, old result not shown
- California District 45· New lines for 2026, old result not shown
- California District 46· New lines for 2026, old result not shown
- California District 47· New lines for 2026, old result not shown
- California District 48· New lines for 2026, old result not shown
- California District 49· New lines for 2026, old result not shown
- 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
Vote in California
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Official results for California
History (17 elections for this seat)
- Votes for listed candidates
- 360,290
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2025)
US House, California District 48, 2024, every candidate Candidate Party Votes and share Share RepublicanDarrell IssaWon Republican 213,62559.3% DemocraticStephen Houlahan Democratic 146,66540.7% - Votes for listed candidates
- 257,071
- Election day
- November 8, 2022
- District map
- Older district map (2022 to 2025)
US House, California District 48, 2022, every candidate Candidate Party Votes and share Share RepublicanDarrell IssaWon Republican 155,17160.4% DemocraticStephen Houlahan Democratic 101,90039.6% - Votes for listed candidates
- 395,100
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2020)
US House, California District 48, 2020, every candidate Candidate Party Votes and share Share RepublicanMichelle SteelWon Republican 201,73851.1% DemocraticHarley Rouda Democratic 193,36248.9% - Votes for listed candidates
- 294,736
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2020)
US House, California District 48, 2018, every candidate Candidate Party Votes and share Share DemocraticHarley RoudaWon Democratic 157,83753.6% RepublicanDana Rohrabacher Republican 136,89946.4% - Votes for listed candidates
- 306,416
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2020)
US House, California District 48, 2016, every candidate Candidate Party Votes and share Share RepublicanDana RohrabacherWon Republican 178,70158.3% DemocraticSuzanne Savary Democratic 127,71541.7% - Votes for listed candidates
- 174,795
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2020)
US House, California District 48, 2014, every candidate Candidate Party Votes and share Share RepublicanDana RohracherWon Republican 112,08264.1% DemocraticSuzanne Joyce Savary Democratic 62,71335.9% - Votes for listed candidates
- 290,502
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2020)
US House, California District 48, 2012, every candidate Candidate Party Votes and share Share RepublicanDana RohrabacherWon Republican 177,14461.0% DemocraticRon Varasteh Democratic 113,35839.0% - Votes for listed candidates
- 242,719
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2010)
US House, California District 48, 2010, every candidate Candidate Party Votes and share Share RepublicanJohn CampbellWon Republican 145,48159.9% DemocraticBeth Krom Democratic 88,46536.4% LibertarianMike Binkley Libertarian 8,7733.6% - Votes for listed candidates
- 308,702
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2010)
US House, California District 48, 2008, every candidate Candidate Party Votes and share Share RepublicanJohn CampbellWon Republican 171,65855.6% DemocraticSteve Young Democratic 125,53740.7% LibertarianDon Patterson Libertarian 11,5073.7% - Votes for listed candidates
- 200,527
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2010)
US House, California District 48, 2006, every candidate Candidate Party Votes and share Share RepublicanJohn CampbellWon Republican 120,13059.9% DemocraticSteve Young Democratic 74,64737.2% LibertarianBruce Cohen Libertarian 5,7502.9% - Votes for listed candidates
- 290,872
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2010)
US House, California District 48, 2004, every candidate Candidate Party Votes and share Share RepublicanChristopher CoxWon Republican 189,00465.0% DemocraticJohn Graham Democratic 93,52532.2% LibertarianBruce Cohen Libertarian 8,3432.9% - Votes for listed candidates
- 179,549
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2010)
US House, California District 48, 2002, every candidate Candidate Party Votes and share Share RepublicanChristopher CoxWon Republican 122,88468.4% DemocraticJohn L Graham Democratic 51,05828.4% LibertarianJoe Michael Cobb Libertarian 5,6073.1% - Votes for listed candidates
- 261,478
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2000)
US House, California District 48, 2000, every candidate Candidate Party Votes and share Share RepublicanDarrell IssaWon Republican 160,62761.4% DemocraticPeter Kouvelis Democratic 74,07328.3% OtherEddie Rose Other 11,2404.3% OtherSharon K Miles Other 8,2693.2% LibertarianJoe Michael Cobb Libertarian 7,2692.8% - Votes for listed candidates
- 180,719
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2000)
US House, California District 48, 1998, every candidate Candidate Party Votes and share Share RepublicanRon PackardWon Republican 138,94876.9% OtherSharon K Miles Other 23,26212.9% LibertarianDaniel L Muhe Libertarian 18,50910.2% - Votes for listed candidates
- 221,391
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2000)
US House, California District 48, 1996, every candidate Candidate Party Votes and share Share RepublicanRon PackardWon Republican 145,81465.9% DemocraticDan Farrell Democratic 59,55826.9% OtherWilliam Dreu Other 8,0133.6% OtherSharon K Miles Other 8,0063.6% - Votes for listed candidates
- 195,636
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2000)
US House, California District 48, 1994, every candidate Candidate Party Votes and share Share RepublicanRon PackardWon Republican 143,57073.4% DemocraticAndrei Leschick Democratic 43,52322.2% OtherDonna White Other 8,5434.4% - Votes for listed candidates
- 230,495
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2000)
US House, California District 48, 1992, every candidate Candidate Party Votes and share Share RepublicanRon PackardWon Republican 140,93561.1% DemocraticMichael Farber Democratic 67,41529.2% OtherDonna White Other 13,3965.8% LibertarianTed Lowe Libertarian 8,7493.8%
1992 to 2024: MIT Election Data and Science Lab, U.S. House 1976-2024, retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
California District 48 was redrawn for 2026, so every row here ran on older lines and covers different territory. The map in force, by state
Download and cite
Cite this page
Election Wrld. (2026). California District 48, US House results. https://www.electionwrld.com/ca/congress/48. Retrieved October 30, 2026.
Embed this seat
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<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>Sources
Sources: MIT Election Data and Science Lab, U.S. House 1976-2024 (CC0 1.0), retrieved Oct 28, 2026, compiled by MIT Election Data and Science Lab (MEDSL) from official returns, not an official source; Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; unitedstates/congress-legislators (current) (CC0-1.0), retrieved Oct 28, 2026, compiled by the @unitedstates project volunteers (rosters from official congressional sources) from official returns, not an official source.
DataState data (JSON)Sources: MIT Election Data and Science Lab, U.S. House 1976-2024, VoteHub polls (CC BY 4.0), FECData as of Oct 28, 2026