**Proposition 4**, a legislatively referred measure from SB 42, seeks to repeal California's 1988 voter-approved ban on public campaign financing and permit state and local governments to create voluntary programs with spending limits, eligibility rules, and restrictions against using earmarked funds for education, transportation, or public safety. Trader consensus assigns "No" a 55% implied probability primarily because past statewide attempts to lift the ban failed at the ballot in 2000 and 2010, organized taxpayer opposition highlights costs to public budgets, and recent polling shows support hovering near or below 42% with substantial undecided voters. The measure advanced on largely party-line legislative votes but lacks significant campaign funding or broad visibility compared with other November 2026 propositions, leaving little momentum to overcome historical skepticism toward taxpayer-funded campaigns.