I know in Texas it's an attempt by the Democrats to lure low information/young voters to the polls to vote straight Democrat ticket (they have wet dreams about turning the state "blue" (Commie) Decocrat).
I say this because there is no ballot initiative to do so, however "a" candidate for the Agriculture Commissioner (Kinky Friedman) is using that as his campaign issue (even though he himself has acknowledged that the office does not have any say on legalizing pot/hemp).
Wendy Davis (Abortion Barbie with out of state feminazi donor cash) is another leg in this assault.
The dims know unless they can get many Texans stoned their chances of turning Texas blue are not good.
All of which supports the argument that the ptb in the party have decided it’s a winning issue.