Overview

• Dr. Richard Pan, a pediatrician and former state senator known for leading California’s school vaccine mandate laws, announced his bid on Tuesday for the U.S. House seat in CA-3.
• Pan is centering his campaign on protecting health coverage and criticizing Kevin Kiley’s support for President Trump’s “One Big Beautiful Bill,” citing a CBO projection of roughly 10 million people losing insurance over a decade.
• Proposition 50 on the November ballot would redraw CA-3 to include eastern Sacramento suburbs such as Auburn, Rancho Cordova, and Folsom, a change analysts say could favor Democrats.
• Pan supports the map change and says he previously represented about 70% of voters in the proposed district, while Kiley opposes Prop. 50 and portrays the effort as a partisan power grab.
• Pan joins Democrats Tyler Vandenberg and Heidi Hall in the primary field, as Kiley, first elected in 2023, argues he can win even if the district lines are redrawn.