Have you checked out Ballotpedia. Whatever your political stripe Ballotpedia is a great resource. It is a compendium of information on ballots, voting, citizen initiatives, referendums, propositions and a whole lot more.
The website explains…
With your help, Ballotpedia aims to be an abundant and growing source of information on citizen initiatives, ballot access, petition drives, initiative and referendum for political change, recall elections, school district bond issues and associated subjects.
Check it out. I think you will find it very informative.