One of the very few (only) things that's good about the GOP gaining a couple of seats in the Senate will be not having to watch Collins go through her "undecided" schtick whenever there's a close partisan vote in the Senate. I don't think she's ever been sincerely undecided about anything - Kavanaugh, tax cuts, Obamacare repeal, etc. It's all an act, and one that a great many people, I suspect, are tired of having to watch. Hopefully she gets the boot in 2020, either from the voters in Maine or through her own retirement.