I’ve seen similar before, but it’s a good broad view of how things moved around. It wasn’t a flip in the 60s, but a migration of the Dixiecrats (Civil Rights was just too far for them) and dying off of the more liberal side of the Republicans, so those voters scattered, some coming to the Democrat side since that’s where support for things like social programs went.
The flip was with FDR, but between 60s-80s they defined what the modern Republican is.
I always like to refer to this site and its infographic - https://kathleenkowal.com/blog/history-of-political-parties-in-the-us
I’ve seen similar before, but it’s a good broad view of how things moved around. It wasn’t a flip in the 60s, but a migration of the Dixiecrats (Civil Rights was just too far for them) and dying off of the more liberal side of the Republicans, so those voters scattered, some coming to the Democrat side since that’s where support for things like social programs went.