"Catholic voters in the mid-nineties displayed their independence. In their party preference they were almost equally divided, but perhaps as many were unattached to either party as could be classified as Republican or Democrat. In their voting behavior in elections after 1968 they no longer behaved as reliable Democrats. On the other hand, after strongly backing Reagan in the election of 1984 and dividing evenly between Bush and Dukakis in 1988, they deserted Republican presidential candidates in the nineties. As the twentieth century closes, Catholics have, beyond a doubt, become the largest swing vote in American politics."
January 1, 1970
https://en.wikiquote.org/wiki/Catholic_Church