Ed: The myth of Hitler being elected is important to debunk because it helps justify a corrosive anti-populism among left-identifying bien pensants. In fact, voters have never elected a (real) fascist, or for that matter a communist, party to office ever.
Allende, a Marxist, was elected in 1970. Marxist and Communist parties have been winning elections in various Indian states for a long time. Just recently that started happening in Nepal too. Moldovan Communists have been voted into power for a couple of decades and I think recently a Communist Party was voted into power in Malta. Communist Parties have been winning local elections and governing much of Northern Italy for decades.