From the Bangor Daily News:

“The Republican is perhaps the most-watched senator on the issue because she has yet to say how she will vote in the impeachment proceedings and she is one of national Democrats’ top targets in a 2020 re-election race in a blue-leaning state that is already dominating airwaves with more than $10 million in spending in 2019 alone, according to [AdImpact].”

Read the full article here.