“All that only makes the Republican-to-Democrat turnaround in the black vote from 1932 to 1936 more surprising, and I’ll be interested to see what you find!”
A little thing called the Great Depression.
Read posts 11 and 19, and 42.
By the way, that quote in your post is not from me, it was to me, that should always be pointed out so that other readers don’t get a poster’s words and point of view mixed up with others.