Influence no longer invisible Races · CA-48 House 2026
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Race · U.S. House · California · 2026

California District 48 · U.S. House · 2026

Seat U.S. House, California District 48

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Race header

U.S. House, California District 48 · Open seat
DEMAdvanced to the general
Marni von Wilpert
89%Hume Outlook · Hume model estimate · as of 2026-10-28
REPAdvanced to the general
Jim Desmond
11%Hume Outlook · Hume model estimate · as of 2026-10-28
IncumbentNot available

Hume Outlook

hume-2026.10-r1 · Forecast as of Oct 28, 2026
89% Marni von Wilpert · DemocratChance to win, between the two named candidates
DEM Marni von Wilpert 89%
REP Jim Desmond 11%
  • Hume model estimate · built on polls, fundamentals, and markets
Latest poll Wilpert 47.0% · Desmond 38.0% SurveyUSA / KGTV (San Diego); The San Diego Union-Tribune · 2026-10-07
Seat lean (Hume PVI) Not available The district lean is held: this state's House map was redrawn, and the plan-aware lean has not yet been cross-checked.
Prior result, this seat Not available District redrawn; not comparable.

Side by side

2 candidates · 5 measures
FEC summary through 2026-10-14
MeasureDEMWilpertREPDesmond
Total receiptsUSD, cycle to date, all authorized committees
Marni von Wilpert$4,966,576.06
Jim Desmond$3,177,972.16
Total disbursementsUSD, cycle to date
Marni von Wilpert$4,307,440.02
Jim Desmond$2,460,453.71
Cash on handUSD, close of the covered period
Marni von Wilpert$659,136.04
Jim Desmond$717,518.45
Latest pollpercent, as stored
Marni von Wilpert47.0%SurveyUSA · 2026-10-07
Jim Desmond38.0%SurveyUSA · 2026-10-07
Seat lean (Hume PVI)identical for every candidate
Marni von WilpertNot available The district lean is held: this state's House map was redrawn, and the plan-aware lean has not yet been cross-checked.
Jim DesmondNot available The district lean is held: this state's House map was redrawn, and the plan-aware lean has not yet been cross-checked.
Money is each candidate's FEC summary: every committee the candidate has authorized, combined, as filed through the coverage date shown.

Polling

2 listed · newest first
Newest field end 2026-10-07
Pollster / sponsorField datesSampleWilpertDesmondOthers
SurveyUSA2026-10-01 to 2026-10-07LV · n=51847.0%38.0%none
SurveyUSA2026-08-27 to 2026-09-01LV · n=52245.0%42.0%none
Polling data CC BY 4.0 (FiveThirtyEight / VoteHub).

    Seat lean · Hume PVI

    not available

    Not available The district lean is held: this state's House map was redrawn, and the plan-aware lean has not yet been cross-checked.

    Prior result, this seat

    not available

    Not available District redrawn; not comparable.

    Sources: FEC filings (through Oct 14, 2026) · Polls: FiveThirtyEight / VoteHub (CC BY 4.0) · Hume PVI and Hume Outlook: Hidden Levers estimates.

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