Alaska • Arizona • Arkansas • California • Colorado • Florida • Idaho • Illinois • Maine • Maryland • Massachusetts • Michigan • Mississippi • Missouri • Montana • Nebraska • Nevada • New Mexico • North Dakota • Ohio • Oklahoma • Oregon • South Dakota • Utah • Washington • Washington, D.C. • Wyoming
American Petition Consultants • Arno Political Consultants • Bader & Associates • Canvasser Services • Capitol Assets • Democracy Direct • Democracy Resources • Discovery Petition Management • Fieldworks • JSM, Inc. • Kimball Petition Management • Lamm Consulting • Masterson & Wright • National Ballot Access • National Petition Management • National Solutions • National Voter Outreach • Progressive Campaigns, Inc.
Approved for circulation • Circulation period • Circulator • Circulator affidavit • Forged signature • Fraudulent signature • Invalid signature • Paid circulator • Petition • Random sampling • Registered voter • Signature certification • Signer • Signer intent • Valid signature • Volunteer circulator • Signature transcription
2008 deadlines • 2009 deadlines • 2010 deadlines
States where signature requirements are based on votes cast for governor
