It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Includes extensive background data on each ballot measure, including campaign contributions. It also explains the process for measures to get on the ballot, which measures didn't make it, and comparisons to previous years.
From SFGate, here's a handy, simple guide to each of the 12 propositions on the California ballot for the November general election, broken into three categories: 1. The big ones that interest groups are dumping millions of advertising dollars into, 2. The criminal justice ones, and 3. The rest.