I think that the difference in 2016 was that Trump was actually the candidate that the Uniparty wanted. Hillary scared the crap out of them and Yeb! and the other GOPe pubbies couldn’t stop her. Well, her and her cheat-machine.
They had a cozy, constrained little Presidency already in place for Trump - complete with 24-hour “news” attacks and multiple impeachments. But, at least he wasn’t Hillary.
Haley is a useful idiot, just as Yeb! was, but she will have to perform better - for a while.