








Republican candidate for U.S. House in California
CA-48 primary: first place
Primary Election
Party selects its nominee.
Current prediction-market probability for the candidate, updated as market prices change.
Jim Desmond is trading at 99% to win the CA-48 primary: first place on prediction markets.
Key details about the candidate’s background, party, office sought and current campaign.
Current roleCommissioner
PartyRepublican
Political ideologyConservative Republican
GenderMale
LocationCalifornia
BackgroundPolitician
EducationSan Diego State University — B.S., Electrical Engineering (1985)
Notable personal detailsJim Desmond is a Republican politician and retired aviator serving on the San Diego County Board of Supervisors (District 5) since 2019. He previously served on the San Marcos City Council and as mayor of San Marcos. Desmond served in the U.S. Navy and later worked as a commercial airline pilot, and he earned a B.S. in electrical engineering from San Diego State University.
Opposes new or higher local taxes and advocates addressing budget shortfalls by cutting or restraining government spending rather than raising revenue. Emphasizes protecting families from additional sales, vacancy, payroll, or property-related tax increases and prioritizing public safety within existing budgets.
Jim Desmond’s public record as San Diego County supervisor shows involvement in county healthcare program decisions and concern about healthcare access in rural communities, but his statements and votes on county-level reforms are limited and do not clearly align with a progressive or conservative national healthcare platform. Available sources document specific local votes (including at least one ‘no’ vote on a county medical program reform) and campaign material referencing healthcare limits in rural areas without endorsing Medicare for All, a public option, or explicit market-based federal‑
The candidate favors stronger border enforcement and increased cooperation with law enforcement while opposing local policies that limit county assistance to federal immigration authorities. He has called the recent cross‑border migrant flows an invasion, proposed repealing county limits on cooperation with ICE, and urged more resources and restrictions to address illegal crossings and related public‑safety concerns.
The candidate has opposed local measures to secure medication-based abortion supplies and was the lone county supervisor to vote against supporting a constitutional amendment to enshrine abortion rights in California. His actions indicate support for restrictions on expanded local or state-level abortion protections rather than advocacy for codifying unrestricted access.
Supports market-driven clean energy measures and incentives (including rooftop solar and consumer incentives for EVs and hybrids) while opposing mandates and some county-level climate regulations that he says would restrict housing; has promoted studies that consider a range of energy supply sources to preserve reliability.
The candidate opposes several local gun-safety proposals and has voted against county measures that would advance gun-safety education and certain gun-safety resolutions. The candidate emphasizes support for law enforcement and public-safety measures rather than new local firearm regulations.
Jim Desmond is in the news because he advanced from the California 48th Congressional District primary and will face Democrat Marni von Wilpert in the general election. The race is being closely watched as a possible House control battleground, and Desmond was one of the top vote-getters in the crowded top-two primary. Recent reports also note that outside spending and national Republican support have increased around his campaign.
Recent polling results and the candidate's current average in the race.
Jim Desmond currently averages 27.0%, ranking first in this race, 15.3 points ahead of the nearest opponent.
Average recalculated from polls through May 8 - 14.








Aggregation source: FiftyPlusOne
Campaign finance totals from the latest available reporting period.
2026
LatestCycle 2026
Source: FEC
New updates coming soon
We're monitoring and will update when new data impacts the race.