Review note: Amanda Nguyen's own campaign site ("Amanda Nguyen for Garden Grove City Council District 3"): her own framing of her candidacy (Senior Paralegal, OC Alternate Defender), platform, and endorsements -- including naming Thu-Ha Nguyen as a "former Mayor Pro Tem" may have more bias because it is an advocacy voter guide compared to other formal government and nonprofit journalism sources.
- ocvote.gov (opens in a new tab)OC Registrar of Voters -- Contest/Candidate Proof List, General Election 11/3/2026 -- City of Garden Grove section (pages 94-99 of 188): confirms Mayor (2 qualified candidates), City Council District 1 (3), District 3 (3), and District 4 (4) as the city's four November 2026 races, each Vote for 1, with incumbent flags and every candidate's filed ballot designation
- ggcity.org (opens in a new tab)City of Garden Grove -- Election Information page: confirms the same four offices up in the November 3, 2026 General Municipal Election ("Mayor at Large; Council District 1; Council District 3; and Council District 4") and links the city's own candidate list and incumbency-information documents
- ggcity.org (opens in a new tab)City of Garden Grove -- 2026 Official Candidate List (the city clerk's own spreadsheet-to-PDF): every candidate's name, filing dates, ballot designation, and contact email/phone for all 12 candidates across the four contests -- independently matches the county's Proof List exactly
- ggcity.org (opens in a new tab)City of Garden Grove -- City Council page: the full sitting 7-member roster (Mayor Stephanie Klopfenstein; George S. Brietigam III, Mayor Pro Tem/District 1; Phillip Nguyen, District 2; Cindy Ngoc Tran, District 3; Joe DoVinh, District 4; Yesenia Munoz-Munoz, District 5; Ariana Arestegui, District 6) -- confirms which three districts (1, 3, 4) have terms expiring in 2026 and that District 1's incumbent, Brietigam, is not among the three qualified 2026 candidates for his own seat
- ggcity.org (opens in a new tab)City of Garden Grove -- official biography for Mayor Stephanie Klopfenstein: Garden Grove's first elected female mayor (2024), District 5 councilmember since 2016, lifelong resident, committee assignments (ACC-OC, OC Sanitation District, OCTA)
- vote4amandanguyen.com (opens in a new tab)Amanda Nguyen's own campaign site ("Amanda Nguyen for Garden Grove City Council District 3"): her own framing of her candidacy (Senior Paralegal, OC Alternate Defender), platform, and endorsements -- including naming Thu-Ha Nguyen as a "former Mayor Pro Tem," the only independently-found biographical detail about the Mayor's-race challenger in this pass
- vote411.org (opens in a new tab)League of Women Voters -- Vote411 voter guide, 'City of Garden Grove Mayor' race (statewide All Races list): each candidate's self-submitted ballot designation and campaign contacts, plus answers to the League's questions -- If elected, what are your top 3 priorities?; What background, experience and/or education qualify you for this elected office?; What is your position on the use of Flock cameras or similar devices? Answers on file from Thu-Ha Nguyen. Capture in data/nov-2026/sources/vote411/garden-grove-mayor.json.
Last updated October 7, 2026.
City of Garden Grove
Mayor of Garden Grove
This person is Garden Grove's Mayor, elected directly by all voters. It is the only council seat elected citywide rather than by district. Garden Grove is a charter city. The Mayor leads City Council meetings and represents the city. The Mayor is one of seven members who vote on budget and city laws. Six district council members hold the other seats. An appointed city manager runs day-to-day operations. The term is four years.
Mayor Stephanie Klopfenstein is running for a second term. Klopfenstein faces Thu-Ha Nguyen, a former Garden Grove Mayor Pro Tem. Whichever candidate gets the most votes on November 3 wins outright. There is no runoff.
Garden Grove's mayor is the only council seat elected citywide rather than by district. Garden Grove is a charter city; the mayor presides over City Council meetings and represents the city publicly, but votes as one of seven members (the mayor plus six district councilmembers) on the budget and city ordinances, alongside an appointed city manager who runs day-to-day operations. The term is four years.
Klopfenstein is the incumbent, first elected to the council (District 5) in 2016 and elected Garden Grove's first female mayor in 2024. Nguyen is a past councilmember and Mayor Pro Tem, according to a rival campaign's endorsement page -- the only independently-found biographical detail about them in this pass; no campaign site, news coverage, or other primary source naming their prior district, service dates, or current platform could be found despite a real search effort. Nguyen's filed ballot designation is 'Cancer Scientist/Teacher.'
Stephanie Klopfenstein
Stephanie Klopfenstein is a lifelong Garden Grove resident. Klopfenstein's family roots in the city date to the late 1800s. They attended Concordia University and worked in radio broadcasting abroad before building a marketing career. They won their first council seat in 2016 and represented District 5 for eight years. In 2024 they became the city's first elected female mayor. Klopfenstein also represents Garden Grove on three regional boards. They are the Association of California Cities Orange County and the Orange County Sanitation District. They also serve on the Orange County Transportation Authority. Their stated goal is representing residents. They also want "a new chapter of growth and prosperity in Garden Grove." They are "striving to enhance the safety and family-friendly environment our great city deserves."
Thu-Ha Nguyen
Thu-Ha Nguyen filed their candidacy under the ballot designation "Cancer Scientist/Teacher." They say they are a former Garden Grove councilmember and Mayor Pro Tem. They say they worked over 25 years as a clinical scientist in genetics and cancer diagnostics. They also trained future clinical laboratory scientists. Their priorities are public safety, affordability, and strong neighborhoods.
Your pick
A nonpartisan office: candidates do not run as Democrats or Republicans, and no party appears on the ballot.