Pluribus AI 2026 Election

2026 Midterms · U.S. House · California Safe

California — 10th District

Portrait of Mark DeSaulnier

Democratic

Mark DeSaulnier

Incumbent

JF

Republican

Jeffrey Frese

Incumbent Democratic Representative Mark DeSaulnier faces Republican challenger Jeffrey Frese in the general election for California's 10th Congressional District on November 3, 2026. DeSaulnier, who has represented the area since 2015, advanced from the June 2 top-two primary alongside Frese with nearly 60% of the vote. The race hinges on differing approaches to cost of living, federal infrastructure spending, tax policy, and election integrity in the East Bay district. Major nonpartisan election handicappers, including Cook Political Report, Inside Elections, Sabato's Crystal Ball, and DDHQ/The Hill, rate the race as Solid or Safe Democratic.

01

Cost of living and housing

high salience

Frese seeks to lower prices by cutting federal red tape and curbing government spending, whereas DeSaulnier supports federal investments in affordable housing, wage protections, and grocery price relief.

Mark DeSaulnier

Supports federal housing and wage investments

DeSaulnier focuses on strengthening the middle class by expanding affordable housing, lowering grocery and prescription costs, and supporting fair wages. He highlights his legislative record of creating permanent affordable housing funds in California and delivering direct community project grants.

  • Advancing transit-oriented housing through the Equitable Transit Oriented Development Support Act.
  • Secured funding for local affordable housing projects like Habitat for Humanity's Esperanza Place.
  • Voted against Republican budget and tax reconciliation bills including the One Big Beautiful Bill Act (H.R. 1) and Limit, Save, Grow Act.

“I’m committed to strengthening the middle class by lowering costs including on housing, groceries, and health care.”

Jeffrey Frese

Supports deregulation and spending cuts

Frese blames federal red tape and reckless spending in Washington for driving up housing, gas, and food costs in California. He advocates cutting federal regulations, curbing government spending, and opposing federal mandates to allow responsible local building.

  • Cut federal red tape that drives up housing, energy, and food costs.
  • Fight inflation and reckless spending that keep mortgage rates high.
  • Oppose one-size-fits-all mandates that delay housing projects and support responsible building.

“Families in CA-10 pay 30–40% more for housing, gas, and everyday essentials than the national average — and Washington keeps making life more expensive.”

02

Elections and government reform

high salience

Frese advocates for mandatory federal voter ID laws and an 8-year congressional term limit, while DeSaulnier opposes federal voter ID mandates and term limits in favor of protecting voter access and reliance on an engaged electorate.

Mark DeSaulnier

Opposes voter ID mandates and term limits

DeSaulnier emphasizes protecting voting access and strengthening government ethics and transparency. He opposes federal voter ID requirements and congressional term limits, arguing that an engaged electorate provides the most effective accountability.

  • Voted against the SAVE Act (H.R. 22) requiring documentary proof of citizenship to register to vote.
  • Serves on the House Ethics Committee to enforce transparency and ethics standard in Congress.
  • Opposes congressional term limits on the grounds that they eliminate experienced, effective legislators.

“Best antidote to bad legislature is an engaged and informed electorate.”

Jeffrey Frese

Supports mandatory voter ID and term limits

Frese advocates for strict federal election integrity measures and reform in Washington. He supports enacting mandatory voter ID for federal elections, paper audit trails, making Election Day a national holiday, and limiting members of Congress to eight years in office.

  • Require voter ID for federal elections and allow same-day voting with ID.
  • Make Election Day a national holiday and use paper ballots as a permanent audit trail.
  • Implement 8-year term limits for members of Congress.

“The Founding Fathers never intended Congress to be a career.”

03

Transportation and infrastructure

high salience

Frese champions federal legislation prohibiting mileage-based driving taxes and location tracking, whereas DeSaulnier focuses on securing federal funds for highway expansion, mass transit, and electric vehicle charging networks.

Mark DeSaulnier

Supports transit modernization and clean energy transit

As a senior member of the House Transportation and Infrastructure Committee, DeSaulnier prioritizes modernizing transit, reducing commute times, and building green infrastructure. He highlights delivering over $46 million in direct local project funding and authoring national EV charging legislation.

  • Authored the Clean Corridors Act establishing a $2.5 billion national EV charging program enacted in the Bipartisan Infrastructure Law.
  • Delivered funding for major regional projects including the Caldecott Fourth Bore, eBART, Highway 4 expansion, and I-680 modernization.
  • Championed federal research on telework to reduce traffic congestion and emissions.

“As a senior member of the Transportation and Infrastructure Committee, I’ve secured billions for California to modernize transit, reduce traffic, and create green jobs.”

Jeffrey Frese

Opposes mileage taxes and surveillance tracking

Frese focuses transportation policy on protecting drivers' privacy and constitutional right to travel. He supports federal legislation to prohibit mileage-based driving taxes that rely on tracking or location reporting.

  • Introduce federal legislation prohibiting mileage-based driving taxes relying on tracking or surveillance.
  • Block federal funds for state programs that tax people based on miles driven.
  • Protect driver privacy by preventing mandatory location reporting or GPS tracking.

“Californians should not be taxed or tracked just for living their lives.”

04

Healthcare and insurance

high salience

Frese proposes cutting federal healthcare mandates to spur market competition, while DeSaulnier supports protecting Medicare, lowering prescription drug prices, and increasing federal funding for NIH cancer research.

Mark DeSaulnier

Supports Medicare expansion and cancer research

DeSaulnier advocates for protecting Medicare, lowering prescription drug prices, expanding mental health coverage, and boosting medical research funding. A leukemia survivor, he founded the Congressional Cancer Survivors Caucus and authors legislation to improve patient navigation.

  • Authored the Cancer Care Planning and Communications Act and Patient Navigation Assistance Act.
  • Founded the bipartisan Congressional Cancer Survivors Caucus and champions annual NIH medical research funding.
  • Voted against terminating CDC COVID-19 vaccination requirements for foreign travelers (H.R. 185).

“Federal research funding saves lives. The NIH produces breakthroughs that reach patients in every corner of America, and I will fight every year to protect that funding.”

Jeffrey Frese

Supports market competition and regulatory reduction

Frese advocates reducing medical and insurance costs by cutting federal red tape and mandates. He proposes reforming federal insurance programs to encourage competition and reward prevention.

  • Lower medical rebuilding costs by cutting federal red tape and mandates.
  • Reform federal insurance programs to reward prevention and market competition.
  • Fix upstream federal failures to reduce crushing health and home insurance premiums.

“Families shouldn’t lose coverage or pay double because Washington refuses to fix upstream problems”

05

Education and workforce

medium salience

Frese advocates exempting teachers from federal income tax and focusing schools on core academic skills, whereas DeSaulnier focuses on worker voice in AI automation, dislocated worker safeguards, and federal education engagement.

Mark DeSaulnier

Supports worker AI protections and public education

DeSaulnier focuses on protecting workers through economic transitions and supporting public education. As Ranking Member of the House HELP Subcommittee, he authored initiatives to prepare workers for AI and automation while protecting organized labor.

  • Created the Future of Work, Wages, and Labor initiative producing over 30 policy recommendations for an AI economy.
  • Authored the Justice for Dislocated Workers Act and Family Engagement in Education Act.
  • Voted against the Protection of Women and Girls in Sports Act of 2025 (H.R. 28).

“Workers, not just tech companies, deserve a voice in what comes next.”

Jeffrey Frese

Supports teacher tax exemption and practical skills

Frese proposes eliminating federal income taxes on teachers' salaries and redirecting school curricula toward literacy, math, and practical skills. He advocates measuring educational success by student results rather than spending.

  • Eliminate federal income tax on teachers' salaries.
  • Focus curricula on literacy, math, critical thinking, real-world skills, and AI/automation competency.
  • Measure results rather than spending and reward schools that succeed.

“No federal tax on teachers’ salaries — we trust them with our kids; we can trust them with their paycheck”

06

Environment and energy

medium salience

Frese emphasizes active federal land management to curb wildfire risk and cutting energy regulations, while DeSaulnier supports strict vehicle emission standards, clean energy transition programs, and EV charging infrastructure.

Mark DeSaulnier

Supports clean energy transitions and emissions standards

DeSaulnier brings experience from nine years on the California Air Resources Board, promoting clean energy infrastructure and stringent emissions standards. He opposes rollbacks of environmental standards and federal fossil fuel subsidies.

  • Served nine years on the California Air Resources Board and co-led the Industrial Safety Ordinance for refinery safety.
  • Authored the Clean Corridors Act establishing a $2.5 billion national EV charging program.
  • Voted against the Lower Energy Costs Act (H.R. 1).

“Tackling climate change with clean energy solutions and environmental protections is also a top priority for a sustainable future.”

Jeffrey Frese

Supports federal forest management and deregulation

Frese prioritizes active federal land and forest management to reduce wildfire risks for California communities. He advocates cutting federal regulations that increase domestic energy costs.

  • Reduce wildfire risk by fixing federal land and forest management.
  • Cut federal red tape that drives up energy costs.

“Reduce wildfire risk by fixing federal land and forest management”

07

Gun safety and crime

medium salience

Mark DeSaulnier

Supports gun control research and legislation

DeSaulnier supports evidence-based gun violence prevention, gun safety technology research, and mental health screenings. His advocacy is informed by personal loss to firearm suicide in his family.

  • Voted for passage of the Bipartisan Safer Communities Act.
  • Authored the Gun Safety Board and Research Act, Advancing Gun Safety Technology Act, and Local Gun Violence Reduction Act.
  • Introduced the Suicide Prevention Assistance Act to integrate mental health screenings into primary medical care.

“California has shown that commonsense gun laws reduce violence. The data supports it.”

Jeffrey Frese No documented position in our sources
08

Reproductive rights

medium salience

Mark DeSaulnier

Supports federal abortion rights and IVF protections

DeSaulnier strongly advocates for codifying reproductive rights into federal law and protecting access to contraception and IVF. He has voted repeatedly to establish a statutory federal right to abortion access.

  • Voted for the Women's Health Protection Act to codify abortion access into federal law.
  • Sponsor of the Right to Contraception Act and the Access to Family Building Act for IVF treatments.
  • Co-sponsored the Paycheck Fairness Act to address gender wage gaps.

“I’ve also fought to protect reproductive rights, voting to codify into law a woman’s right to choose and supporting the Women’s Health Protection Act.”

Jeffrey Frese No documented position in our sources
09

Immigration and border security

medium salience

Mark DeSaulnier

Supports humane immigration reform and opposing mass deportations

DeSaulnier supports humane, comprehensive immigration reform and opposes mass deportations. He has passed private relief legislation for undocumented individuals in medical need and voted against Republican immigration enforcement bills.

  • Authored and passed H.R. 785 granting permanent legal status to Isabel Bueso for specialized medical treatment.
  • Voted against the Laken Riley Act (S. 5).
  • Voted against the Protect Our Communities from DUIs Act (H.R. 875).

“Our immigration system needs reform, but reform means fixing what is broken, not using fear to score political points.”

Jeffrey Frese No documented position in our sources
10

Media regulation and local news

low salience

Mark DeSaulnier

Supports tech platform accountability and local news preservation

DeSaulnier advocates for legislative remedies to sustain local journalism by holding major technology platforms accountable. He supports allowing local news outlets to operate as non-profits and negotiate collectively with digital platforms for fair compensation.

  • Authored legislation permitting local newspapers to operate as non-profit entities.
  • Co-led legislation allowing news organizations to negotiate with tech platforms for content distribution compensation.

“When local news disappears, accountability disappears with it.”

Jeffrey Frese No documented position in our sources
11

Mental health and youth policy

low salience

Mark DeSaulnier

Supports early intervention and social media accountability

DeSaulnier focuses on expanding early childhood mental health services and holding social media platforms accountable for youth mental health impacts. He authored legislation integrating mental healthcare into early education programs.

  • Authored the Early Childhood Mental Health Support Act to incorporate mental health support into Head Start.
  • Created AfterSchool4All during his tenure on the Contra Costa County Board of Supervisors.
  • Authored the Family Engagement in Education Act enacted within the Every Student Succeeds Act.

“Teenagers are struggling with anxiety and depression at levels we haven’t seen before, and the research connecting social media design to children’s mental health is serious and growing.”

Jeffrey Frese No documented position in our sources
12

Civil rights and historical justice

low salience

Mark DeSaulnier

Supports racial justice exonerations and disability access

DeSaulnier champions civil rights, disability accommodations, and correcting historical racial injustice. He led a multi-year effort that resulted in the full Navy exoneration of the Port Chicago 50 sailors in 2024.

  • Secured full exoneration for the Port Chicago 50 Black sailors court-martialed after a 1944 explosion.
  • Delivered federal funding to restore the Port Chicago site as a public memorial.
  • Authored the 21st Century Assistive Technology Act to expand access for individuals with disabilities.

“I believe that the measure of a just society is how it treats the people with the least power, and that civil rights work is never finished.”

Jeffrey Frese No documented position in our sources