I’m afraid that if Bernie doesn’t secure the Democratic Party’s nomination (and Bernie would make a great candidate), some on the ideological left will take a pass on the general election. They may vote, but do little, practical speaking, in the months leading up to election day, while damming the nominee with faint praise. It will be a reprise of 2016, although lesser so, I suspect. It is hard to sustain such a position in the face of the prospect of a second term for Trump with all its attendant dangers.