The legalization of cannabis in my state was brought about by activists, not Democratic Party members, and was passed by the public, which is made up of a majority of unaffiliated voters. Our Democratic governor vehemently opposed the measure. He did implement it when it passed, which Republican legislatures and governors have not done when similar bills were passed by the public in Republican states, though.
Curious of the state but I’m willing to bet money >90% of those activists were, conveniently, voting Democrats or of the Democratic coalition.
This is generally reflected in public polling: https://www.pewresearch.org/politics/2024/03/26/most-americans-favor-legalizing-marijuana-for-medical-recreational-use/#:~:text=62%25 of conservative and moderate,Democrats (84%25) say this.
Finally, conservatives are starting to come around but they’re always behind the curve.