Historically, Montana has had a more union background coupled with a sort of libertarian streak. Also, because of the state’s low population, retail politics were a lot more effective. The Democrats in Montana are more pro-gun statewide, and more conservative on some social issues (though some libertarianism mixed in). This meant the Democrats statewide had a lot of wiggle room, but the national party is not a good fit.
Only if liberal is defined by guns and social issues. I'd say they are center-left of the national party on economic issues.
