Democracy is supposed to optimize for the will of the voters, but in fact it optimizes for the ability to get the votes. If I can make people vote for me even if I don't give them what they want (e.g. because I lie to them, or because I convince them that my competitors would be even worse), I win the election.

I could similarly say: People who are good at getting votes, by whatever (hopefully legal) means, become successful politicians in democracy.