California's 38th congressional district primary on June 2 featured an open seat following redistricting and the incumbent's move to another district. The nonpartisan top-two primary advanced the leading vote-getters to the November general election, with Hilda Solis receiving the highest share among Democratic candidates and Pedro Casas securing the Republican spot. Recent candidate filings, local endorsements, and campaign spending patterns shaped the field of four contenders. Full vote certification and any remaining ballot processing could still influence final advancement if margins shift, while the district's strong Democratic lean sets the stage for the general election matchup.