What the heck is going on?
I've asked around some folks who have the inside on a lot of things in DC.
Opinions vary, but most are saying that there is going to be a complete washout in November mid-term. If so, which I'm somewhat skeptical of, the claim is that we are in for two years of Congressional hearings.
If only one chamber swings, it's enough to keep anything from getting done and everything being opposed. If that happens, there are many who don't want to be associated with more of the clusterfudge.
Others have said that Bodnar polls surprisingly well in Montana as an opponent of Daines. He's running as an independent with the Dems not having anyone very nameworthy, making his ability to pluck off many Dems, most the Independents, and some Rs who were already lukewarm about Trump & Co. That would make for a draining race, which is not very appealing to Daines.
Regardless of how one feels about Daines and Zinke, it is easy to see why they would step aside at their age and the strength of their balance sheet. They've probably got other things they'd rather be doing with the remaining time they've got.
Personally, I think they know a lot of what is going on that we don't hear/see. They've looked at it, and they want to get off this ship now.
These two stepping aside has Mike Lee rubbing his loins. He likely thinks he will still be in the majority next Congress, and if so, he's intends to get his way this time.