Did you know that until 1992 the Republicans had the “blue states”.
http://presidentelect.org/e1988.html
Then the commies somehow got it changed. Why do you think that would be?
Because the Dems are of the “traffic light” persuasion: Greens too yellow to admit they’re really reds.
Two are immigration and also a leftward shift in many churches who educate the young in morals, among other reasons.
Same reason they took over the “liberal” moniker.