When Donald Trump stood before his followers on Jan. 6 and urged them to march on the United States Capitol, he was doing what he had always done. He never took electoral democracy seriously nor accepted the legitimacy of its American version.

Even when he won, in 2016, he insisted that the election was fraudulent — that millions of false votes were cast for his opponent. In 2020, in the knowledge that he was trailing Joseph R. Biden in the polls, he spent months claiming that the presidential election would be rigged and signaling that he would not accept the results if they did not favor him. He wrongly claimed on Election Day that he had won and then steadily hardened his rhetoric: With time, his victory became a historic landslide and the various conspiracies that denied it ever more sophisticated and implausible.

People believed him, which is not at all surprising. It takes a tremendous amount of work to educate citizens to resist the powerful pull of believing what they already believe, or what others around them believe, or what would make sense of their own previous choices. Plato noted a particular risk for tyrants: that they would be surrounded in the end by yes-men and enablers. Aristotle worried that, in a democracy, a wealthy and talented demagogue could all too easily master the minds of the populace. Aware of these risks and others, the framers of the Constitution instituted a system of checks and balances. The point was not simply to ensure that no one branch of government dominated the others but also to anchor in institutions different points of view.

In this sense, the responsibility for Trump’s push to overturn an election must be shared by a very large number of Republican members of Congress. Rather than contradict Trump from the beginning, they allowed his electoral fiction to flourish. They had different reasons for doing so. One group of Republicans is concerned above all with gaming the system to maintain power, taking full advantage of constitutional obscurities, gerrymandering and dark money to win elections with a minority of motivated voters. They have no interest in the collapse of the peculiar form of representation that allows their minority party disproportionate control of government. The most important among them, Mitch McConnell, indulged Trump’s lie while making no comment on its consequences.

Yet other Republicans saw the situation differently: They might actually break the system and have power without democracy. The split between these two groups, the gamers and the breakers, became sharply visible on Dec. 30, when Senator Josh Hawley announced that he would support Trump’s challenge by questioning the validity of the electoral votes on Jan. 6. Ted Cruz then promised his own support, joined by about 10 other senators. More than a hundred Republican representatives took the same position. For many, this seemed like nothing more than a show: challenges to states’ electoral votes would force delays and floor votes but would not affect the outcome.