Oh, forget it! Of course Biden will be the nominee!

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It was clear from an early point that, barring some unforeseen circumstance, the 2024 presidential election would be a rematch between Donald Trump and Joe Biden — the first contest with two presidents on the ballot since 1912.

Most Americans, according to several polls, say they do not want this. Most, a recent CBS News survey reports, think such a rematch is evidence of a broken political system. But most Americans are nonetheless resigned to it.

This palpable sense of exhaustion is perhaps the reason so many political observers have taken to speculating about a future in which Biden, at least, doesn't run.

David Ignatius wrote recently in the Washington Post that if Biden and Kamala Harris "campaign together in 2024, I think Biden risks undoing his greatest achievement — which was stopping Trump." Likewise, Eliot Cohen wrote this summer in the Atlantic that Biden "has no business running for president at age 80."

I find this drumbeat, which has been ongoing since at least 2022 ("Let me put this bluntly: Joe Biden should not run for re-election in 2024," Mark Leibovich wrote last summer, also in the Atlantic. "He is too old"), to be incredibly strange, to say the least. The basic premise of a voluntary one-term presidency rests on a fundamental misconception of the role of re-election in presidential politics and governance.

"Among the many hats the president wears, none is more important to his long-term success than that of party leader," political scientist James W. Davis wrote in a 1992 book on presidential leadership. "Unless he is skilled in the management of party affairs, especially in dealing with members of the coequal legislative branch, the president will not be able to achieve that esteemed place in history reserved for all of our great presidents."

The reason, Davis explains, is that the institutional separation of the executive and the legislature along with the fragmented nature of political authority in the American system — presidents and lawmakers of the same party, even lawmakers within the same state, do not share the same constituencies — result in imposing barriers to presidential ambition. But, Davis writes, "while the president faces numerous constraints in our Madisonian system of checks and balances, he nevertheless can, if he has the inclination and leadership drive, use his party ties to lead the nation to new heights."

Key to achieving this is the possibility of future power, which is to say, the prospect of a president's re-election. The promise of a second term, and thus another four years to achieve political and ideological goals, is a critical incentive that binds lawmakers to a president. This is especially true given the recent trend toward nationalization of congressional elections, in which public esteem for the incumbent — or lack thereof — shapes the fate of the entire party.

Or, as presidential scholar Clinton Rossiter observed in a 1957 letter addressing a House committee hearing on the potential repeal of what were then recently enacted presidential term limits, "Everything in our history tells us that a president who does not or cannot seek re-election loses much of his grip in his last couple of years." In other words, no president wants to be a lame duck.

Rossiter, it should be said, opposed the 22nd Amendment — which wrote presidential term limits into the Constitution in 1951 — as a nakedly partisan prohibition "based on the sharp anger of the moment rather than the studied wisdom of a generation." It was, in his view, an "undisguised insult to the memory of Franklin D. Roosevelt."

Even Biden himself said that he viewed himself as a "transition candidate." Perhaps that was true in the months after he won the nomination. For reasons that should now be obvious, however, it was a fantasy. There is no faster road to irrelevance than for a president to tell the nation he plans to step aside. Biden could be an effective, successful president or he could be a one-term, transitional figure. He could not be both. A president who doesn't intend to run for re-election is essentially a president who can be safely ignored. No one who wanted to achieve something with the office would make that pledge.

Let's also be honest about the specific individual in question: the kind of person, like Biden, who plans and plots for a lifetime to become president is going to want to serve as long as the law, and the voting public, will allow.