The DSA will win because they have the greater will, just like the Nazis did.
But of course Hitler & the Nazi’s didn’t really gain electoral power until the liberal powers that be under Pres. Hindenburg decided that the correct political move during the formation of the next government was to cut a deal to make Hitler Chancellor in order to get a governing coalition. Big Mistake! And one that I expect the Democrats will soon make if not in this election cycle then certainly in the next.