California's open primary narrows each race to the top two vote-getters, setting up November battles for House control. Key races include the 22nd District in San Joaquin Valley and the 48th District in San Diego.
- In the 22nd District, two Democrats (Jasmeet Bains and Randy Villegas) compete to face Republican Rep. David Valadao.
- In the 48th District, Democrats Marni von Wilpert and Ammar Campa-Najjar challenge Republican Darrell Issa. - Other races feature generational challenges, such as Mai Vang against Doris Matsui in Sacramento and Eric Jones against Mike Thompson in Wine Country.
The primaries will determine which candidates advance to November, with Democrats aiming to retake the House majority.