Produced by the California Secretary of State, the Official Voter Information Guide provides the official summaries and other information about the measures on the ballot.
San Francisco Department of Elections
Run by the City and County of San Francisco, the Department of Elections website allows you to look up your polling place and download information about the candidates and issues.
Produced by the League of Women Voters, Smart Voter helps you find your polling location as well as get your ballot with online links to assist in learning about the candidates and issues.
Provided by the California Secretary of State's office, partial online voter registration allows you to begin the process online (signature still required). The signed registration form must be in 15 days before the election day (October 22, 2012, for the November election).