Except not that long ago the Iranians DID revolt, following a sham election where the reformists/progressives should have won. They got into the streets. And then they got shot.

You seem to be living in a phantasy world where subjects of a dictature are just "asking for it", and a 50%-or-more majority should magically change everything. That's not how power works. Money and bullets, you see, matter more than ballots.

How well is that working out for Syria and Libya at the moment?

The whole concept of a dictatorship is that the ruling party has more power and can keep the people subjugated. The civilian populace don't have tanks and helicopters.