Your fundamental political biases may be largely influenced by the genes that predispose your personality (although I'm sure there is also evidence that suggests environment plays a role). But your political beliefs can still be wrong with respect to your biases. Say for example you have a certain goal derived from a bias, like say you want people to have easier access to healthcare, except the policy you support would do the exact opposite. So you can be wrong in your political beliefs. Except when it comes down to arguing for our fundamental biases.