One thing I've heard time and time again is that there was no sizeable German resistance to the Nazis and that the Germans overwhelmingly supported Hitler during the war. But If almost 12 million people were prepared to vote for the sworn enemies of the Nazis in 1932, they couldn't have all (or even mostly) been killed, imprisoned, or converted within the next 12 years. Why was there no large-scale underground opposition?
On top of this, how did Ernst Thalmann not appeal more than Hitler? Wouldn't most Germans be anti-war?
Edit to rephrase: Wouldn't people support a system that help their economy and health and whatnot, rather than Hitler's ideals of genocide and combat, as well as suppression of media? Also to answer to the best of my abilities: when people don't get their candidate, it's not an immediate revolt. They would revolt when they start doing bad things. Before the war and concentration camps really started, the Nazis imprisoned and killed and tortured the Communists. On top of this, many may have been drafted or simply not disagreed strongly enough. While this doesn't answer the question fully, I think it's important to realize that by the time Hitler was worth revolting against, all the people who would had been forced into military, imprisoned/tortured, killed, or fled.