To survive, let alone flourish, liberal democracy needs the right’s support. It needs, that is, conservatives who accept liberal and democratic ground rules. Yet conservatism began life as an enemy of liberalism and never fully abandoned its reservations about democracy. Conservatism endured in modern politics by cooperating with liberalism and soon learned how to prevail in democracy. Liberal democracy of the kind that thrived in Western Europe and the United States after 1945 grew from that historic compromise by the right. When, as now, the right hesitates or denies its support, liberal democracy’s health is at risk. With the left in retreat, both intellectually and in party terms, the right commands politics at present. But which right is that? Is it the broadly liberal conservatism that underpinned liberal democracy’s post-1945 successes or an illiberal hard right claiming to speak for “the people”?