Alaska, California, Colorado, Hawaii, Maine, Montana, Neveda, New Mexico, Oregon, Rhode Island, Vermont and Washington as of June Of 2007. Michigan will have it on the ballot in 2008. Seems like there was another addition recently in one of the new england states. Mass has a ballot initiative to 'legalize', I have seen objections to the way its written. This information would be available at several website. MPP, MAP, Norml, etc. VV