You know that self interest has no particular connection to rationality, right?
In your theory of voting, does self interest matter to voters at all or not at all? Are there any discernible patterns that can be generalized or mostly idiosyncratic behavior? Are voters basically reasonable or unreasonable in the choices they make at the ballot box?
What do you even mean by "select the most optimal candidate"? Do you even know?You could start by reading a truly massive literature in American political behavior on all kinds of evidence about heuristics and irrational biases in voting behavior. blockquote>