A whole country believed Adolf Hitler’s promises and voted for him.

I agree with the idea of your post, but not the details. Hitler (and the National Socialists Worker's Party) only got about 37% of the vote. They got the most, but still had to form a coalition as it was a parliamentary system. Not really a proper coalition, but more one of a collaboration with the conservative right. A not-detailed description here. Hindenburg appointed Hitler as Chancellor, where he remained until Hindenburg's death (where upon he seized total power).

But the NAZI party never got a majority vote (i.e. over 50%). The majority voted for other than the NAZI party. It didn't matter, ultimately, as -with the help of the right- Hitler seized power, burned the Reichstag, and consolidated power with his SA bullies and local "law enforcement". Eventually, he didn't need his SA, and eliminated their leaders.