Murkowski, a true-blue, dyed-in-the-wool, Democrat.
She just doesn't know it yet.
Seriously, there are three confirmed RINOs that need to do the duffle-bag drag outta the Senate:
* Mittens, probably the worst of the three
* Murkowski
* Collins
Sasse won reelection in 2020, so Repubs are stuck with him for another 6 years.