How did Vermont become one of the reddest states in the union during the 1980s? I don't understand why it took its next door neighbor NH to change so slowly from red to a swing state.
My theory is that VT is historically the most "Yankee" state in the US, with a low percentage of Catholics. Thus, until 1992 it was reliably GOP (except in 1964). The dominant denominations in VT-- United Church of Christ, Unitarian-- formed the backbone of the liberal GOP. Once the GOP firmly established itself as a right-wing evangelical populist party, perhaps with Pat Buchanan's 1992 convention speech, VT sharply went Dem and never looked back.