Kathleen Treseder

Key Facts

Party N/A; nonpartisan election
Status Challenger


Kathleen Treseder graduated from the University of Utah with an Honors BS in Biology. She then got her PhD from Stanford University in Biological Sciences [2]. Treseder is currently a climate scientist and Professor of Biology at UC Irvine, as well as an Endowed Chair at UC Irvine. She has been an Assistant Professor of Biology at the University of Pennsylvania and UC Irvine. Treseder’s research interests include fungi, soil functions and how soil microbial ecosystems can impact climate change [3].

Key Issues


Treseder wants to help businesses, especially in their recovery from COVID-19. She supports collective bargaining, worker’s rights, a workforce that is well trained and skilled, and prevailing wages [1].


Treseder advocates access to high quality education. She advocates for scholarships, college preparatory programs, career technical training, and trade schools [1].


Treseder supports climate action in order to address the climate crisis. She has helped found the group OC Clean Power, which successfully advocated for renewable energy in Orange County [1,3]. She advocates for legislation for de-carbonization, as well as clean power that provides permanent, good-paying jobs [1, 3].


Treseder advocates for affordable housing for working families, professionals, seniors and veterans. She supports union labor on housing projects [1].


Treseder supports reducing traffic by creating new housing near business centers. She also wants to build more infrastructure, such as retail centers, recreational centers, libraries, fiber networks and multi-modal transportation systems [1, 4].


Treseder supports creating a stable water supply for droughts [1].


Katie Porter, U.S. Representative; Mike Levin, U.S. Representative; Harley Rouda, Former U.S. Representative; Katrina Foley, OC Supervisor; David Min, State Senator; Josh Newman, State Senator; Cottie Petrie-Norris, Assemblywoman; Sharon Quirk-Silva, Assemblywoman; Tiffany Ackley, Aliso Viejo Mayor; Sue Kempf, Mayor Pro Tem Laguna Beach; Kim Nguyen, Mayor Pro Tem Garden Grove; Kim Carr, Huntington Beach City Councilmember; Manuel Chavez, Costa Mesa City Councilmember; Chris Duncan, San Clemente City Councilmember; Toni Iseman, Newport Beach City Councilmember; Carlos Manzo, Westminster City Councilmember; Jose Moreno, Anaheim City Councilmember; Natalie Moser, Huntington Beach City Councilmember; Arlis Reynolds, Costa Mesa City Councilmember; Susan Sonne, Buena Park City Councilmember; Connor Traut, Buena Park City Councilmember; George Weiss, Laguna Beach City Councilmember; Sergio Contreras, Retired Westminster City Councilmember; Dr. Karen McLaughlin, Irvine Ranch Water District Director; Sasha Renée Pérez, Alhambra Mayor; Alma Hernandez, Suisun City City Councilmember; Kellie Hinze, Encinitas City Councilmember; Kathye Armitage, Santa Clarita Water Board Director; Dr. Tiffany Boyd-Hodgson, Vallecitos Water Board Director; Carolyn Inmon, South Orange County Community College District Trustee; Dr. Tina Arias Miller, Rancho Santiago Community College District Trustee; Karen Bacolod, Beautification Commissioner, Artesia; Ken Montgomery, Transportation Commissioner, Irvine; Cassius Rutherford, Vice Chair, Costa Mesa Parks, Arts & Community Services Commission; Joshua Block, Community Organizer/Student; Dennis Bress, Sales Rep at DBSR; Ayn Craciun, Irvine Climate and Environmental Health Mom/Advocate; Rabbi Stephen Einstein, Founding Rabbi Emeritus at Congregation B’nai Tzedek; Parshan Khosravi, Iranian American Democrats of California; Lara Horgan, Community Organizer; Dean Frank LaFerla, UCI School of Biological Sciences; Joni Nichols, Traveling Doula; Bruce Tierney, Software; Joanna Weiss, President, Women for American Values and Ethics; Michael Sean Wright, Community Organizer; Democratic Party of Orange County; Democrats of Greater Irvine; College Democrats at UCI; OC Young Democrats – General Endorsement; OC Young Democrats – Young People’s Platform Endorsement; 314 Action; Build the Veterans Memorial Park Committee; Communication Workers of America Local 9510; Fund Her; Imagine Action OC; International Brotherhood of Electrical Workers Local 411; Ironworkers Local 416 and 433; LA/OC Building Trades; Laborers LIUNA Local 652; National Women’s Political Caucus OC; OC Action; OC Labor Federation; OC League of Conservation Voters; Painters and Allied Trades District Council 36; Planned Parenthood of San Bernardino and Orange Counties; Sunrise Movement OC; Teamsters Joint Council 42; Teamsters Local 952; UNITE HERE! Local 11; United Auto Workers- Western States; United Food and Commercial Workers Local 324; University Council -American Federation of Teachers (UC-AFT); AFT Local 1474 (UCI Chapter); Vote Mama; Women for American Values and Ethics (WAVE); Sierra Club


1 Kathleen Treseder
2 UC Irvine Faculty
3 Sunrise OC
4 The Epoch Times
5 Facebook