I think it’s a few things -
1) The country is sick to death of being told they are thick, idiots, racists, homophobes and so on, because they refuse to fall in line with the liberal invertebrates. people are voting on their right to think and feel how they want to, without facing an onslaught because they don't agree men can change gender etc etc.
2) The attempted radicalization of young white males humanity by the liberals.
3) Social media’s (and media in general) sowing of discontent and misery and Dem’s inability to understand or control it
And most importantly -
4) an electorate that is unhappy with the incumbent