From William Saletan in Slate.

In a democracy, the commander in chief works for you. You hire him when you elect him. You watch him do the job. If he makes good decisions and serves your interests, you rehire him. If he doesn’t, you fire him by voting for his opponent in the next election.

Not every country works this way. In some countries, the commander in chief builds a propaganda apparatus that equates him with the military and the nation. If you object that he’s making bad decisions and disserving the national interest, you’re accused of weakening the nation, undermining its security, sabotaging the commander in chief, and serving a foreign power—the very charges Miller leveled tonight against Bush’s critics.

Are you prepared to become one of those countries?

When patriotism is impugned, the facts go out the window. You’re not allowed to point out that Bush shifted the rationale for the Iraq war further and further from U.S. national security—from complicity in 9/11 to weapons of mass destruction to building democracy to relieving Iraqis of their dictator—without explaining why American troops and taxpayers should bear the burden. You’re not allowed to point out that the longer a liberator stays, the more he looks like an occupier. You’re not allowed to propose that the enormous postwar expenses Bush failed to budget for be covered by repealing his tax cuts for the wealthy instead of further indebting every American child.

If you dare to say these things, you’re accused—as Kerry now stands accused by Cheney and Miller—of defaming America and refusing "to support American troops in combat." You’re contrasted to a president who "is unashamed of his belief that God is not indifferent to America." You’re derided, in Cheney’s words, for trying to show al-Qaida "our softer side." Your Silver Star, Bronze Star, and three Purple Hearts are no match for the vice president’s five draft deferments.

In his remarks, Miller praised Wendell Wilkie, the 1940 Republican presidential nominee who "made it clear that he would rather lose the election than make national security a partisan campaign issue." But there are three ways to make national security a campaign issue. One is to argue the facts of a particular question, as Kerry has done on Iraq. The second is to sweep aside all factual questions, as Cheney and Miller did tonight, with a categorical charge that the other party is indifferent or hostile to the country’s safety. The third is to create a handy political fight, as Republicans did two years ago on the question of labor rights in the Department of Homeland Security, and frame it falsely as a national security issue in order to win an election.

So now you have two reasons to show up at the polls in November. One is to stop Bush from screwing up economic and foreign policy more than he already has. The other is to remind him and his propagandists that even after 9/11, you still have that right.