Los Angeles County Board of Supervisors, 3rd District in District 3, California

2026 Primary Election

• Tonia Arey — Real Estate Agent in Calabasas, California

  Tonia Arey is a real estate professional with Coldwell Banker in Calabasas. Originally from New York City, her family moved to California, and she grew up in Sherman Oaks and Agoura Hills. She attended Santa Barbara City College for two years before transferring to San Francisco State University, where she graduated with a bachelor's degree in Kinesiology. Arey has been an active community member, involved with grassroots organizations such as Protect Calabasas. Her decision to run for office was significantly influenced by what she describes as the irresponsible handling of the Pacific Palisades fire and its aftermath.

• Tomas Sidenfaden — Software Developer and Writer in Unknown, Unknown

  Tomas Sidenfaden is a naturalized American citizen who taught himself to code and has self-published articles on Medium. In 2016, he envisioned an alternative social platform to address issues in news media and later developed an app called Nuprizm, which allows users to rate news articles to provide context and visibility to public sentiment.

• Lindsey Horvath — Incumbent Member of the Los Angeles County Board of Supervisors, District 3 in West Hollywood, California

  Lindsey Horvath assumed office as a member of the Los Angeles County Board of Supervisors for the 3rd District on December 5, 2022. She is the first millennial and the only renter on the all-female board. Previously, she served as a councilmember and was the longest consecutively serving Mayor for the City of West Hollywood. Her career began in advertising and social justice advocacy, where she founded the Hollywood chapter of the National Organization for Women (NOW). Horvath graduated cum laude from the University of Notre Dame with a Bachelor of Arts in Political Science and Gender Studies. She also holds a Certificate in Nonprofit Management & Fundraising from UCLA Extension.