Candidates for San Bernardino County Board of Supervisors — District 4
2026 Primary Election — June 2, 2026
Office: San Bernardino County Board of Supervisors, District 4 — the county's chief legislative and executive body, with authority over the county budget, land use, public services, and operations. District 4 covers Chino, Chino Hills, Montclair, Ontario, and Upland (~450,000 residents). The office is nonpartisan. Incumbent Curt Hagman, first elected in 2014, faces challenger Christina Gagnier. Under the top-two primary system, if no candidate receives a majority, the top two advance to November 3.
Christina Gagnier Nonpartisan Age 44 Challenger
Small Business Owner / Attorney / Former Chino Valley USD Board President • Ontario
Christina Gagnier is a partner at Gagnier Margossian LLP and a lecturer at UC Irvine Law School. She served on the Chino Valley Unified School District Governing Board from 2018 to 2022, including as Board President. She ran for U.S. House CA-35 in 2014 (lost general). Grew up in Chino Valley; her father died of cancer when she was 12 and her mother was a public school employee. She worked multiple jobs through college, graduating from UC Irvine (BA Political Science & Sociology), University of San Francisco (JD), and USC (MPA). Started her own law firm with $60 after the 2008 recession. Appointed to the FCC Consumer Advisory Committee under President Obama. Served on the CA Attorney General's Cyber Exploitation Task Force. Founded Our Schools USA (2023), a pro-public education advocacy organization with chapters in 40+ states. Two-time Chair of the Chino Valley Chamber of Commerce.[1]
Top Issues / Platform
- Affordable Living & Good-Paying Jobs: Attract high-wage industries, support small businesses, invest in workforce development so families can afford to live in the county
- Balanced Economic Development: Move beyond warehouse-centric logistics economy; use data standards (traffic, air quality, job quality) to evaluate projects; attract advanced manufacturing, clean energy, tech
- Anti-Corruption & Transparency: Create public dashboards for county performance, increase data accessibility, stop "MAGA extremism" and corruption in local government
- Immigrant & Civil Rights Protection: Oppose aggressive ICE enforcement; protect families' access to hospitals, schools, and churches without fear
- Public Education & Workforce: Expand career/technical programs, support unions, invest in training aligned with employer needs[2]
Key Endorsements
- San Bernardino County Democratic Party — official endorsement
- Planned Parenthood of Orange and San Bernardino Counties' Community Action Fund
- Inland Empire United
- Congressman Dave Min[4]
Strengths ▲
- Strong educational background (BA, JD, MPA from UC/USC/UC Irvine)
- Experience as elected school board member and board president
- Expertise in technology law and cyber policy — fresh perspective for county government
- Endorsed by Democratic Party establishment and Planned Parenthood
- Small business owner who understands economic challenges
- Founded national advocacy organization (Our Schools USA) — strong organizing skills
Weaknesses ▼
- Lost previous congressional race (2014) — has not won a competitive election
- Need to introduce herself countywide — name recognition lags behind Hagman
- Running against a well-funded, long-serving incumbent with deep institutional ties
- "Anti-MAGA" messaging may not resonate in all parts of the district
- Education-focused background may not be seen as directly relevant to county supervisor role
Curt Hagman Nonpartisan Age 61 Incumbent Favorite
Incumbent County Supervisor, District 4 (since 2014) • Chino Hills
Curt Hagman is a 12-year incumbent on the San Bernardino County Board of Supervisors. He previously served in the California State Assembly (2008-2014, termed out), as a Chino Hills City Councilmember (2004-2007), and as Mayor of Chino Hills (2007-2008). He holds a BA in Psychology from UCLA (Naval ROTC, Phi Gamma Delta). Currently serves as Chair of the IEHP Governing Board (largest not-for-profit Medicare-Medicaid public health plan in the US, 1.4M+ members), President of SCAG (Southern California Association of Governments), and Vice President of the Ontario International Airport Authority. He also serves on the boards of South Coast AQMD, OmniTrans, and SBCTA. He is a Lt. Colonel in the California State Guard and President of CBS Holdings Group LLC. Elected unanimously as Board Chair twice. Married to Rossana, two children.[1]
Top Issues / Platform
- Homelessness Reduction: Point-in-Time Count showed homelessness decreased for second straight year in SB County (April 2026)
- Healthcare Access: Chair of IEHP Governing Board; expanding access to 1.4M+ members
- Transportation & Infrastructure: President of SCAG; board of OmniTrans, SBCTA, Ontario Airport Authority
- Economic Development: Ontario Airport growth, logistics industry, regional job creation through SCAG and airport authority
- Public Safety & Veterans: Partners with County Veteran Affairs for claims/resource events; serves as Lt. Colonel in CA State Guard[3]
Key Endorsements
- Reform California (conservative advocacy group)[5]
Strengths ▲
- 12 years as county supervisor — deep institutional knowledge and relationships
- Extensive regional leadership (SCAG President, IEHP Chair, Airport Authority Vice President)
- State Assembly experience (6 years) provides legislative connections in Sacramento
- Strong record of delivering for the district across transportation, healthcare, and economic development
- Defeated competitive challengers before (Connie Leyva in 2022, Gloria Negrete McLeod in 2014)
- Bipartisan recognition — two-time unanimous Chair of Board of Supervisors
Weaknesses ▼
- 12-year incumbent — vulnerable to "time for a change" messaging
- Calls to secede from California ("Empire" movement) may alienate moderate voters
- Campaign website appears dormant — may not be actively updating digital presence
- Republican alignment in a district with growing Democratic registration
- Warehousing and logistics focus may be criticized amid anti-warehouse sentiment
- Has not faced a serious Democratic challenge since 2014 (Leyva in 2022 was underfunded)
Race Summary & Outlook
Incumbent Curt Hagman (12-year supervisor, former State Assemblymember) faces Democratic challenger Christina Gagnier (former school board member, attorney, education advocate). Hagman has deep institutional experience — he serves as SCAG President, IEHP Chair, Ontario Airport Authority Vice President, and has strong connections across the region. Gagnier is running as a reform candidate focused on economic diversification (beyond warehouses), anti-corruption, and civil rights.
- Hagman's advantage: Name recognition, institutional support, and a track record of delivering for the district. He won outright in the 2022 primary with 56.9% against Connie Leyva. In a low-turnout primary, his established network gives him a strong edge.
- Gagnier's opening: Democratic Party endorsement, growing Democratic registration in the district, and a reform message that could appeal to voters frustrated by warehouse proliferation and county governance. If she can consolidate Democratic voters and keep Hagman below 50%, she can force a November runoff.
- Turnout factor: Low-turnout June primary typically favors the well-known incumbent. Higher Democratic turnout in November could shift the dynamics in a runoff.
- Key question: Can Gagnier's coalition of Democrats, education advocates, and reform-minded voters keep Hagman under 50%? Or will Hagman's deep institutional ties and low-primary turnout deliver another outright primary win?
Likely outcome: Hagman wins outright in the primary, or finishes first and wins easily in November. Gagnier's best hope is keeping Hagman below 50% in the primary and hoping higher Democratic turnout in November changes the dynamics.
Primary: June 2, 2026 — General: November 3, 2026