I wouldn't really put Putin into the mix because Putin is an obvious dictator figure, except nobody wants to talk about it. Anyone with two braincells that meet every now and then will notice that a person who has the law changed during a period of self-invented tandemocracy for the sole purpose of being able to become a candidate in the next elections is a future dictator. He's power-hungry and I don't think that falsifying the elections is beyond him.
It's more that the outcome of the survey is rigged the same way the outcome of the election.