When democracies are under threat from the right, conservative movements have an especially important role to play in their defense. As the political scientist Daniel Ziblatt has argued in his masterful Conservative Parties and the Birth of Democracy, conservatives act as a “hinge of history”: If they come to democracy’s defense, the system usually survives. If they make common cause with democracy’s enemies or prioritize short-term wins over a long-term commitment to maintaining democratic institutions, the door stands wide open for all manner of autocrats.