Mutual toleration refers to the idea that as long as our rivals play by constitutional rules, we accept that they have an equal right to exist, compete for power, and govern. We may disagree with, and even strongly dislike, our rivals, but we nevertheless accept them as legitimate. This means recognizing that our political rivals are decent, patriotic, law-abiding citizens—that they love our country and respect the Constitution just as we do. It means that even if we believe our opponents’ ideas to be foolish or wrong-headed, we do not view them as an existential threat.

