One June 1, Democratic presidential candidate Andrew Yang tweeted, “According to twins studies between one-third and one-half of political alignment is linked to genetics; that is most of us are born somewhat wired to be liberal or conservative. If this is the case we need to build bridges as much as possible. It’s not just info or culture.”
The first part of this statement is mostly true – twin studies (or comparisons between identical and fraternal twins) do show that identical twins tend to be more similar than fraternal twins on political attitudes. From this, we infer that genes play a role in the development of political opinions. But exactly what that role is, and how it might impact how we engage with one another, is still very much unknown.