 The idea here is that if it’s wrong (even if it’s within my rights) in general for me to express sincere racist attitudes, and so it’s wrong for me to express sincere racist commitments at the polls. Similar remarks apply to other wrongful attitudes. To the extent it is wrong for me to express sincere support for illiberal, reckless, or bad ideas, it would also be wrong for me to vote for candidates who support those ideas.