The Rat party has gone way left. America is STILL a center-right nation.
2020 election will be 1972 election redux.
The problem with that is that the 1972 election was a personal victory for Nixon, but the Republicans didn't make much headway in Congress. It wasn't a "wave" election.
I would prefer that 1980 be the model. That was a "wave" election in which Republicans swept into Congress in large numbers along with Reagan's victory.