Should the Weimar Republic have banned Adolf Hitler from becoming Chancellor in 1933?

[The Mikado]

This is a pretty meaningless question in that Germany DID try ruling through decree and ignoring the Reichstag for about two years after 1930. Brüning's government resigning was a sign that with a majority for the "Coalition of No" in the Reichstag between the Commies and the Nazis, any government would be untenable without support for one or the other. both of Brüning's two successors spent their entire time in office throwing around for any sort of "how can we stay in power supported by the Nazis from the outside" or "how can we make the Nazis our junior coalition partners" and Hitler wouldn't stand for either because the Nazis were just larger than all the other parties.

Even in some sort of reality where the DNVP didn't lose its mind and become almost as right wing as the Nazis and it actually tried to form some sort of grand coalition with the SPD and Zentrum (which is basically a fantasy land anyway), that would STILL not be anywhere near a majority. A government like that would run into the same problem Brüning did plus the problem that it'd be internally impossible to keep together.

The way to avoid the Nazi takeover if you start as late as the end of Weimar Republic basically involves Brüning not being himself and taking aggressive actions about the Depression, and if he were the type of person who would do that he wouldn't be in Zentrum to begin with. The Depression was so unbelievably bad by 1932-1933 that the electorate was never going to return something that wasn't even worse every time voters wanted a new Reichstag.