Mike Thompson Poised to Advance in CA-04 Primary
Rep. Mike Thompson is expected to move forward from California’s 4th Congressional District primary and compete in the 2026 general election.
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Will Mike Thompson advance from the CA-04 primary election? Prediction Market OddsRep. Mike Thompson is widely expected to advance from California’s 4th Congressional District primary on June 2, positioning the longtime Democratic incumbent for another general election campaign in the 2026 midterms.
Thompson, who has represented the North Bay and surrounding areas for decades, enters the primary with strong name recognition, established party support and a deep record in Congress. Under California’s top-two primary system, the leading candidates regardless of party affiliation move on to the November ballot.
The outcome will help shape the fall contest for CA-04, a district that has remained favorable terrain for Thompson. Official results and candidate certifications will be issued through California election authorities following the primary.