States where signature requirements are based on votes cast for governor

From Ballotpedia

Fifteen of the 24 states that allow ballot initiatives use the vote cast for governor in the most recent election to determine the number of signatures required on initiative petitions.

Arizona Arkansas California Illinois

Maine Massachusetts Michigan Mississippi

Missouri Montana Ohio Oregon

South Dakota Utah Washington

One state that allows only the veto referendum also uses the gubernatorial vote as a benchmark for determining the required number of signatures:

• Maryland

	v • d • e Signature requirements
Signature requirements	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
Petition companies	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.
Terms	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
Petition drive deadlines	2008 deadlines • 2009 deadlines • 2010 deadlines
Signature law	States where signature requirements are based on votes cast for governor