I disagree with OP here. Hitler absolutely rose to power due to having the support of a plurality of Germans. This isn't a case of "too much democracy," however. It's a case of "German society was systemically antisemitic and racist and happily voted in Nazism because they wanted it."
Germany was not uniquely anti-Semitic compared to most other European countries nor was anti-Semitism their main appeal to most of their voters (as opposed to a core base of ideologues and true believers).
For some it was a case of "who cares if Hitler is an antisemite, me and my family have been out of a job for three years now (and everything was better when we still had an Emperor)" though.
Which essentially boiled down to: "A dictatorship? What could possibly go wrong?"