Really? Well, I would argue that you are denying that Republicans did poorly in 1998 because you do not like the Democrats. When a party normally expects to make huge gains, but instead suffers a small loss, that is not considered doing well, that is considered doing poorly.
Well as explained... parties do not automatically make huge gains based on Presidential performance and there is no pattern.
Historically, party out of power makes huge gains during the second mid term election of the president. Republicans did not do that in 1998, and the phony impeachment trial was solely responsible for that (the election results was part of the reason why Gingrich quit as the speaker of the House).
Failed.
As explained 1954-1994 Democrats ran both sides of the house. When are you going to stop saying "normally"?
What was the reason for Gingrich to quit, if not the poor election results?
Because he was polarizing that is why.