California voters face Proposition 4 on the November 3, 2026 ballot, a legislatively referred statute that would repeal the 1988 voter-approved ban on public campaign financing and authorize state and local governments to create optional matching or grant programs subject to spending limits and eligibility rules. Trader sentiment favoring rejection at 60% reflects persistent concerns over taxpayer costs for political campaigns during a period of affordability pressures, combined with historical precedent of voter rejections of similar measures. Opposition from groups such as the California Taxpayers Association emphasizes fiscal risks and potential incumbent advantages, while supporters including the League of Women Voters and Common Cause highlight safeguards against misuse of designated funds like those for education or transportation. Limited recent polling and the absence of a major opposing campaign committee have left the measure's prospects closely tied to broader voter attitudes toward government spending on elections.