I know, but if I didn't restrict it to that, it would be a contest to debate who was worse, Hitler or Stalin. My mempry is a bit fuzzy on this, but wan't Hitler "elected" Chancellor so if I had put dully elected, he probably would have come up on top aswell.
That's debatable, depends how you look at it.
Technically, the Chancellor wasn't (and still isn't) "elected" by the people at all, the people vote for representatives in the Reichs-/Bundestag who can hold the Kanzler accountable. But in the Weimar Republic the Reichskanzler was selected the Reichspräsident who theoretically could have selected
anybody. In reality that person had to be someone who has the support of the Reichstag so
usually the leader of the strongest party in the parliamentary elections. And that
was Hitlers's NSDAP with 33% after the november 1932 elections (which were the last democratic elections in Germany before WWII).
And a couple months later President Hindenburg made him Kanzler, which was de facto the end of democracy in Germany. So I think it's more accurate to say Hitler was legally/constitutionally elected, but not necessarily democratically - 33% is not really an overwhelming vote of confidence. And nothing that happened after his appointment to Reichskanzler was even remotely democratic.