Right, and the heroic Soviets also fought to combat the evil that were the Nazis, because they were natural enemies, no other reason no...
/s (just in case it wasn't obvious.)
Being a facist doesn't stop you from fighting other fascists, especially when those other fascists are fucking with your shit. The only difference until now was that the two parties managed to deadlock each other needing the support of an uncaring populace to gain total power. Once one ultimately wins, this whole "pillar of democracy" thing is over. Having literally only 2 parties for centuries is a bad omen for democracy.