Which states have the most restrictive laws related to initiatives and referenda?
Massachusetts ballot initiative process is already the most restrictive in the country, with stringent limitations on what issues can be addressed by initiative petition, requirements for legislative review and negotiation with proponents, and the shortest collection window in the nation. Wyoming also has one of the most difficult petition processes for initiatives. Mississippi is also not initiative friendly. Sources: http://www.commoncause.org/site/pp.asp?
