Some people on this thread don’t seem to have any clue what “Mainline Protestantism” is or what it’s become. These are the social-justice churches that self-identify as activist left-wing institutions. Whatever voters they have among their 20 million members are already comitted leftists. They might as well be Unitarian Universalists.
So every voter that is Episcopalian, Lutheran, Methodist, and Presbyterian is a “committed leftist” that can be safely written off?