How do I find out what contribution and voluntary spending limits apply to a state or local candidate for office?
State: Limitations on campaign contributions with respect to state candidates, state committees, and state political parties and voluntary spending limits with respect to state candidates are set forth at California Contribution Limits (PDF). This link is also included on the main "Campaign Finance" page of Cal-Access under the title "Proposition 34 State Candidate Contribution and Voluntary Expenditure Limits."
See, also, the Fair Political Practices Commission's website (PDF) which addresses issues regarding state officeholder committees, legal defense funds, communications identifying state candidates, contributions from state lobbyists, recall elections, and ballot measure committees.
Local: Information regarding any contribution limits and spending limits that may apply to local candidates can be obtained from offices of the county clerk or city clerk involved with the local election. That information is not available in Cal-Access.