The Democrats and the Republican Moderates could form a working majority and neuter the orcs. They would each get credit for professionalism and compromise and moving the country forward, and that would leave Hate Radio and Fox sputtering out in the cold with the Freedumb Caucus.
With significant achievements the GOP Moderates would be able to withstand primary challenges from the far right nutbars who have now been exposed as failures, and the country would benefit from the banishing of this domestic political terrorist movement that has destroyed governance since the mid-90s. The Democrats would lose the chance to have a tidal wave election in 2018, but the amputation of the Bircher lunatic right would be a long run win since the Overton window would readjust to where it has normally been in American politics.
Collins is incredibly safe in her seat. She is insanely popular in Maine. She is probably going to run for governor though. She's getting old and has probably had enough with the GOP nutjobs in Washington.