Short of being seated, he has already stated that he will side with the left on some issues.
He has a constituency in MA that he represents, and to which he is accountable. I’m certain that I won’t agree with some of those votes. However, issues such as health care, nat’l security, etc., that strongly impact the whole country are the votes that most interest me.
I never thought he was going to be as conservative as I’d like. I’m just thankful he seems to be less liberal than Ted Kennedy, who made his brother, JFK, look conservative in retrospect.