I read about this once upon a time not so very long ago but also not recently. I’m pretty sure we are all aware that the Republicans were once the liberal party and Democrats were the conservative, hence the whole “southern Democrats” thing and Lincoln being a Republican.

Now what I was reading had to do with some politician in the 1920’s or 1930’s jumping to the other side in protest of a stance his original party had taken, and people on the side he jumped to jumping to the other side to not be associated with him, leading to a lot more ship-jumping.

Can someone pretty please fill in the info for me about this? Thank you.