Ah well, in our modern democracies I would say, it is very much possible, that the majority of people hates the elected politicians.

How is that possible?

Well, first of, not everyone has voting rights.

Second, many do not vote because they hate all politicians.

Third, even people who do vote, can hate the person they vote, but they see them as the smaller evil to the OTHER guy they even hate more.

Forth, during the vote the voter believed the promises and was disappointed to have them broken again, after election, which is when the hate returns.

So all in all, plenty of possibilities to have hated leaders voted in.

Having said that - hating is easy.

But transforming a corrupt, but nationalist society is hard.