But I guess this isn’t even a case of flipping.
My point was that there's flipping all the time.
What was brought up in this thread was Lincoln being a Republican, and the Southern Democrats being the racist party, and how that seems "odd" now. Well, it seems odd because of Nixon's Southern Strategy
Nixon's Southern Strategy. This flipped things around and the party of Southern racism became the Republican Party.
I think one of the things we've seen flip more recently (which has free trade implications) is that the Democrats have become more and more the "elite" party rather than the party of the common working man. It hasn't completely flipped because
organized labor is still on their side, but I think increasingly the working class don't identify with Democrat ideals. So the Republicans, who used to be the "business" party and
@medinabuckeye1 would call out for supporting both immigration [to bring in lower cost workers] and free trade [to seek out lower cost workers elsewhere] is becoming the "we have to protect our manufacturing worker" party. Hence anti-immigration [which dovetails nicely with continuing to shore up the racist Southerner base] and pro-tariff [don't buy stuff from low cost countries, or from China because they'll get too powerful]. It also fits well with nationalism, which was always historically the Republican Party's turf as well.
Other flips have been more weird. Russia is one. I can't imagine the party of Ronald Reagan complaining about military aid to Ukraine to halt Russian expansion. Yet here we are. I won't say that the Republican Party has become "pro-Russia", but they've gone from being the anti-Russia party to more along the "eh, we don't like what Putin is doing but we'd just rather not be involved" party. I don't get it.