Reading

Fascists quickly profited from the inability of centrists and conservatives to keep control of a mass electorate. Whereas the notable dinosaurs disdained mass politics, fascists showed how to use it for nationalism and against the Left. They promised access to the crowd through exciting political spectacle and clever publicity techniques; ways to discipline that crown through paramilitary organization and charismatic leadership; and the replacement of chancy elections by yes-no plebiscites. Whereas citizens in a parliamentary democracy voted to choose a few fellow citizens to serve as their representatives, fascists expressed their citizenship directly by participating in ceremonies of mass assent. The propagandistic manipulation of public opinion replaced debate about complicated issues among a small group of legislatures who (according to the liberal ideals) were supposed to be better informed than the mass of the citizenry. Fascism could well seem to offer to the opponents of the Left efficacious new techniques for controlling, managing, and channeling the “nationalization of the masses,” at a moment when the Left threatened to enlist a majority of the population around two nonnational poles: class and international pacifism.

And so the conservatives essentially invited them in. Robert O. Paxton's The Anatomy of Fascism