You were just asking yourself, "What's Susan Collins thinking?" Weren't you?

Senator from Maine, Susan Collins

CNS: Maine Senator Collins to Seek Re-Election in 2020.

Continuing to position herself as a centrist on a day that the House is expected to impeach President Donald Trump, Maine Senator Susan Collins announced Monday she will run for a fifth term in 2020.

“I promised the people of Maine a decision this fall whether I would seek re-election,” Collins said this morning in an email to supporters. (And we can't have politicians not keeping their promises, can we? - DD)
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Having long cultivated a reputation for independence, Collins is likely to be scrutinized on the basis of whether she votes to remove Trump from office should the House continue on track to impeach him this evening.

Collins says she didn’t vote for Trump in 2016. Neither did a majority of Maine voters: The state split 47%-44% in favor of Democratic candidate Hillary Clinton.

In 1999, Collins voted against convicting President Bill Clinton for perjury and obstruction of justice, joining a small group of Republicans who sided with Democrats in defending the president.

In 2017, Collins became one of three GOP senators to oppose a repeal of former President Barack Obama’s signature health care law. The measure failed by a single vote.

Can't the Repub Party find a real, actual, Conservative/Republican-Indie-Libertarian to run against Collins?