Why is Vermont so liberal nowadays?

[🐒Gods of Prosperity🔱🐲💸]

Vermont isn't quite as affluent as it's sometimes made out to be. per capita income is @ 27K, and median household income is 51K, almost exactly the US average. (http://factfinder.census.gov/servlet/ACSSAFFFacts?_event=Search&geo_id=&_geoContext=&_street=&_county=&_cityTown=&_state=04000US50&_zip=&_lang=en&_sse=on&pctxt=fph&pgsl=010) VT ranks