“Herbster got “Roy Moore-d” by the GOP establishment when he tried to run for Governor in ‘22, and a moderate establishment squish won the 3-way primary vs. Herbster and some left-wing state Senator who calls himself a Republican.”
Yeah, they made sure Herbster lost because Sasse wanted to leave the senate and McConnell did not want a Trump guy appointing his replacement. So Herbster was defeated, a go-along was elected, Sasse resigned and we got Ricketts.
AFAIK Herbster is not officially in the Senate race yet, though I have seen some sites which believe he is (or will be).
It remains to be seen whether Trump would endorse him again, and whether the allegations which conveniently popped up 2 years ago have been proven false yet.
Since Herbster is a Republican, “guilty until proven innocent” applies.