I've had a shift on drug policy that would probably be considered a "leftward" move, but I consider it a move towards more constitutionalist consistency. I used to be a massive drug warrior and supported large-scale federal involvement in drug policy. I now realize that the entire Federal war on drugs is predicated on a ridiculously loose interpretation of the Commerce Clause in the Constitution. States are supposed to be tasked with police powers "to establish and enforce laws protecting the welfare, safety, and health of the public.", and that is where drug policy should be left.
https://www.law.cornell.edu/wex/police_powers