most liberal/conservative USA possible.

okay I was wondering. with a POD no earlier than 1900, whats the most liberal or conservative the USA could possibly get? without being invaded and/or conquered.
 
For liberalism, I'd say Eugene Debs getting elected from jail in 1920.

For conservatism, probably George Wallace getting elected in 1972, or perhaps George Lincoln Rockwell getting elected in 1964.

What exactly PODs are necessary to make that happen I don't know.
 
1932 attempted coup, followed by the Left taking over and inviting the South to leave or end segregation. Both liberal and conservative Americas. Self selecting feedback process begins to operate.
 
Top