His supporters are glad he’s doing this because (warning: generalization), they consider “the other side’s opinions too dangerous to take the risk they might win.

Needless to say some percentage of ”the other side” feel at least that trumps’s supporters’ ideas are too dangerous, though I don’t many feel that the election should be subverted because of it.

Source for first point: the polemics of various relatives who moved to the US and became US citizens. Source for the second point: two relatives who did the same, but adopted different politics.