Louisiana Eisenhower in 1956
Louisiana's usually been slightly less overwhelmingly partisan than the other Deep South states and Eisenhower was a fairly popular war hero candidate.
Catholic vote? Not sure about this.
Catholic and black vote.
Suburban white liberal vote along with working-class Catholic support in the vote and black vote in the latter.
Lots of white liberals even before the era of Latte liberalism along with a strong labour tradition.
Plenty of Catholic voters in Maine.
The white vote had started to transition to the GOP and the blacks had just regained their access to the franchise.
Possibly socially conservative Catholic Democrats and moderate suburbanites voting for Bush on the basis of National Security and gay marriage?