I'd say the Gloria Allred client who said she was with Walker in 1993 in Dallas when was on the roster and playing for the Cowboy was the biggest flop.
Walker was traded to the Vikings in 1989 and then to Philly in 1992. So in 1993, he was not in Dallas, nor playing for the Cowboys and she was not living with him.
That story was a one day wonder and then memory-holed.
Runner-up, the Jan 6th Committee going out with a whimper and not a bang.
In terms of hits, Kari Lake just demolished Katie Hobbs, repeatedly and then an extra bonus, Liz Cheney.
Oz just had to remain standing and speak coherently to look great next to Fetterman. A great October surprise that Fetterman's campaign played on him, not in his favor.