Susan Collins’ ability to win under these rules is affected by her standing in the state, the configuration of the slate of candidates, and a pattern of partisan polarization toward ranked choice in Maine. 

Susan Collins’ purported centrist credentials have relied in part on her stance as an advocate of reproductive rights. That sort of positioning works well in Maine. But, with her vote for Kavanaugh, Collins lost endorsements that could prove detrimental to her reelection.