How did the party demographics change toward the end of the New Deal coalition and at the beginning of dealignment?

Question

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The New Deal coalition was made up of a diverse group of voters including southern whites, blue-collar workers, religious conservatives, and minorities who were largely loyal to the Democratic Party. However, as the New Deal era ended and dealignment began, many of these groups shifted their party allegiance. Southern whites, blue-collar workers, and religious conservatives became more loyal to the Republican Party, while minorities became even more loyal to the Democrats. This is reflected in the realignment of the South as a Republican stronghold and the emergence of the so-called "Reagan Democrats."

How Did the Party Demographics Change Toward the End of the New