The idea that any craziness can be justified by polling the majority is crazy. The majority is sometimes crazy. A pure democracy is a menace. Majority rule, unfettered by the rule of law and separation of powers, is tyranny.

You know who has been voted into office?

Hitler, Stalin, The Muslim Brotherhood, Hamas, Kim Jong Il, Mao Zedung, Vladamir Putin, Nicolás Maduro

No, being voted into office does not make your government legitimate. Sometimes, it just means you rigged the vote. Sometimes, it just means that most of your country's voters are literally retarded.

One of the great ironies of democracy is that it doesn't prevent the voters from voting in someone who ends democracy. There are some votes cast, that are the final votes cast.