Congress has fallen down, too. House and Senate Republicans bear the greatest share of the blame. Some were just fine with Mr. Trump’s authoritarian tendencies. Others abhorred his actions, but have done nothing of substance to counteract these risks. The Senate minority leader, Mitch McConnell, gave an impassioned speech against Mr. Trump’s actions after Jan. 6, but he did not vote for conviction, perhaps fearing the wrath of the Republican base.More surprisingly, Democratic House and Senate leaders have not acted as if the very survival of American democracy is at issue, even though leading global experts on democratic backsliding and transitions into authoritarianism have been sounding the alarm.President Biden put it well in his Jan. 6 anniversary speech about Mr. Trump and his allies holding “a dagger at the throat of America, at American democracy.” But we need action, not just strong words.Here are the three principles that should guide action supporting democratic institutions and the rule of law going forward.To begin with, Democrats should not try to go it alone in preserving free and fair elections. Some Democrats, like Marc Elias, one of the leading Democratic election lawyers, are willing to write off the possibility of finding Republican partners because most Republicans have failed to stand up to Mr. Trump, and even those few Republicans who have do not support Democrats’ broader voting rights agenda, such as passage of the John Lewis Voting Rights Advancement Act.Flying solo is a big mistake. Democrats cannot stop the subversion of 2024 election results alone, particularly if Democrats do not control many statehouses and either house of Congress when Electoral College votes are counted on Jan. 6, 2025. Why believe that any legislation passed only by Democrats in 2022 would stop subversive Republican action in 2024? A coalition with the minority of Republicans willing to stand up for the rule of law is the best way to try to erect barriers to a stolen election in 2024, even if those Republicans do not stand with Democrats on voting rights or other issues. Remember it took Republican election officials, elected officials, and judges to stand up against an attempted coup in 2020.Other Republicans may find it in their self-interest to work with Democrats on anti-subversion legislation. Senator Minority Whip John Thune recently signaled that his party may support a revision of the Electoral Count Act, the old, arcane rules Congress uses to certify state Electoral College votes. While Mr. Trump unsuccessfully tried to get his Republican vice president, Mike Pence, to throw the election to him or at least into chaos, Republicans know it will be Democratic vice president Kamala Harris, not Mr. Pence, who will be presiding over the Congress’s certification of Electoral College votes in 2025. Perhaps there is room for bipartisan agreement to ensure both that vice presidents don’t go rogue and that state legislatures cannot simply submit alternative slates of electors if they are unsatisfied with the election results.