I think that you’re thinking of Senator Crapo (whom I believe sponsored the Senate bill).
Former Rat Congressman and failed 1992 Senate nominee Richard Stallings (1983-1992), entered the race on the last day of filing.
This is his second comeback bid, he lost to Simpson in 1998. He’s 73 years old.
I think the district is safe enough that we don’t have to worry about Simpson’s punk *ss RINO supporters throwing the election to Stallings once Smith beats Simpson in the primary.