If this was 1974 and a republican president and republicans in the House and Senate were acting like trump and his party are acting today I believe the republican party would have suffered a defeat in the polls so catastrophic it likely would have gone the way of the Whigs and other long since dead political parties in this country.
Before the 1974 midterms Democrats already controlled comfortable majorities in the House, Senate and in Governors mansions. And in the 1974 elections Democrats added 4 more seats in the Senate moving to a filibuster proof total of 61 seats, added 49 House seats, which doubled their already large majority, and for good measure won 4 more governor races, to control 36 of the 50. All of this in response to one corrupt elected official. One whose crimes, quite frankly, were not anywhere near as severe as trump's. And those losses in the House, Senate and Governors mansions were not the result of hundreds of polititicians in full-throated defense of a corrupt and criminal president. They were, as much as anything, throwing the baby out with the bathwater, as if to say "not in our house."
In 2022 though, Americans will probably respond to a party that is almost completely made up of full-throated supporters of a corrupt, criminal and utterly unworthy president by returning it to power in the House and the Senate. American voters should be ashamed when the only thing they think of is their pocketbook, and when half of them don't even understand WHY their pocketbook doesn't have as much money in it today as it may have had 6 months or a year ago. It is incredibly disheartening.