Could this be a situation where politicians have faulty data and use that to guide how they act? I would have assumed that a majority of these states - and my home state of NJ - would be very anti-drug but these votes with >60% in favor of legalization show that significant portions of America think drug-related activities are not "immoral" or "wrong" and should not be criminalized. If you had asked me a few years ag…
I'm not aware of any data on this specifically with regard to drug control policy, but there is research from 2013 which reveals that American politicians vastly overestimate how conservative American voters are on multiple key issues.
See e.g.:
Primary source: https://www.vanderbilt.edu/csdi/miller-stokes/08_MillerStoke...
Popular media reporting: https://nymag.com/intelligencer/2018/11/study-congress-overe...
Further analysis: https://theprogressivecynic.com/2014/05/02/is-the-usa-center...