The idea that the American political parties "switched" is heavily oversimplified
Geographically, this is true.
Looking at an election map from 1924 and comparing it with one from 2004, obviously the states that were red before "switched" with the blue states
But when it comes to the actual political positions of the two parties, they didn't literally switch
Republicans are and have always been more protectionist than Democrats
Republicans have more consistently been strict on or anti-immigration
Republicans have most commonly been laissez - faire on the economy while Democrats have been more in favour of government programs and spending
The southern strategy was certainly real but the GOP didn't just up and change all of its positions at any point
I think that most people either deny that the parties evolved at all or they believe that they switched on everything, but neither view is the complete truth