Wait a minute, this doesn't make sense. The Donks won 22 seats in 1964, but that was the year the "white backlash" against the Civil Rights Act helped the Republicans. If the "white backlash" was helping the Republicans, how did the Donks win 22 seats?
Of course, it could be because it was the Southern Democrats who stood firm against the Civil Rights Act in 1964, as they had throughout the 1950s and early 60s. Perhaps the "white backlash" was rewarding the Democrats, who had stood foursquare against desegregation for the previous 100 years.
But you tell a reporter these days that the Democrats were the segregationists back then, they'll look at you like you have two heads.
Perhaps, they should go have an intimate chat with Ernest Hollings.