The party switch was just that. A party switch. Not an ideological one. Essentially, the democrats became the left and the republicans became the right. So the democrats WOULD have been on the same side of the political spectrum as fascism but they switched so now they’re closer to communism in terms of their place on the spectrum. The republicans WOULD have been the liberals but they switched so while the Republican Party is not necessarily fascist, in the same way the Democratic Party isn’t necessarily socialist, they are on the same side of the political spectrum