What Is a Lame Duck Session? How Congress Governs After the Votes Are Counted

A lame duck session is the stretch of time when Congress comes back to work after an election but before the newly elected members are sworn in. The outgoing Congress keeps every power it had the day before the votes were counted. Members who lost, retired, or were never on the ballot can still pass laws, confirm judges, ratify treaties, and spend money. The Twentieth Amendment shortened that window to about two months. It did not close it.

What is a lame duck session of Congress, exactly?

The phrase is older than the practice it describes. “Lame duck” came out of eighteenth-century London exchange slang for a trader who could not cover his debts — still on the floor, no longer able to fly. American politics borrowed it for officials who hold office after losing the thing that disciplines them most: a next election to answer for.

In practice the term covers two overlapping ideas. There are individual lame ducks — a defeated senator, a term-limited president, a representative who announced her retirement in March. And there is the lame duck session itself: the formal legislative period Congress convenes between Election Day and the swearing-in of its successor on January 3.

Why does the United States still have lame duck sessions?

Because of a calendar problem that once had no better solution. Under the original Constitution, new congressional terms began on March 4, which meant a Congress rebuked at the polls in November went on legislating for four more months. That was not malice. It was mud. Counting votes, certifying results, and moving a member of Congress from Oregon to Washington by rail and horse took time.

The Twentieth Amendment, ratified in 1933, fixed the worst of it. New Congresses now convene on January 3 and presidents are inaugurated on January 20. The amendment is sometimes called the Lame Duck Amendment for exactly that reason. But shortening a gap is not the same as closing one, and it turns out that two months of full legislative authority is plenty of time to do almost anything.

What can a lame duck Congress actually do?

Everything. That is the part most people find hard to believe. There is no constitutional asterisk that reduces a defeated senator to half a vote. Until noon on January 3, the sitting Congress can:

• Pass appropriations — and the end of the calendar year is almost always when funding deadlines land, which is why lame duck sessions so often open with the threat of a shutdown.
• Confirm nominees, including lifetime federal judges, who will outlast the Congress that seated them by decades.
• Ratify treaties with a two-thirds Senate vote.
• Impeach and try federal officials.
• Rewrite the rules of elections, including the ones that will govern the next presidential count.

This is not theoretical. The House impeached a sitting president in a December lame duck session in 1998. A lame duck Senate ratified the New START arms control treaty in December 2010 and struck a major tax compromise in the same weeks. In December 2022, a departing Congress passed a full-year spending bill, the Respect for Marriage Act, and the Electoral Count Reform Act — a rewrite of the law governing how presidential electoral votes are counted, enacted by a body that had already been replaced at the ballot box.

Whatever you think of any of those outcomes, notice the common thread: consequential, durable decisions made in the one window where the usual accountability mechanism is switched off.

Is a lame duck session a threat to democracy or a safety valve?

Honest answer: it depends entirely on what gets done in it, and the case runs both ways.

The critique is straightforward. Voters just rendered a verdict. Having the rebuked body make binding decisions in the interval before that verdict takes effect looks less like governing and more like running out the clock. When a lame duck session is used to lock in outcomes the incoming majority was elected to undo, it reads to the public as a workaround, and the public is not wrong to read it that way.

The defense is also real. A legislator with no next campaign is briefly the freest actor in Washington — able to cast the vote he actually believes in rather than the one that polls. Some of the least tribal legislating in modern American history has happened in December, for exactly that reason. And the alternative to a functioning lame duck session is not purity; it is a government that cannot pay its bills for two months every other year.

The useful distinction is not partisan, because both parties have used these weeks when they had them. It is between routine business that has to happen and irreversible decisions that exist to pre-empt an election result. The first is a safety valve. The second corrodes something that is hard to rebuild.

Why is the lame duck window such good thriller material?

Because it is a gift to anyone writing about power. A novelist spends chapters manufacturing a ticking clock and a cast with nothing left to lose. The lame duck session hands over both: a hard deadline written into the Constitution, and a building full of people whose careers end in sixty days.

That is the kind of machinery the Bull Moose series lives inside — the procedural seams where the republic is strongest on paper and thinnest in practice. The Nine-Hour President turns on how fast legitimate authority can change hands and how little margin the system leaves for error. If you want the shortest way in, the prequel, The Senate Deception, is free.

The reassuring part about lame duck sessions is that the Constitution already anticipated this problem once and fixed most of it. The sobering part is that the rest of the fix is not legal. It is restraint — and restraint has to be chosen every two years by people who are already packing up their offices.

Further reading: Lame-duck session (Wikipedia)

Frequently asked questions

What is a lame duck session of Congress? It is the legislative period when Congress meets after an election but before the newly elected members take office on January 3. The outgoing Congress retains full power to pass laws, confirm nominees, and ratify treaties during that window.

Why is it called a lame duck? The term comes from eighteenth-century London exchange slang for a trader who could not cover his debts. American politics adopted it for officeholders who remain in power after losing the accountability of a next election.

Did the Twentieth Amendment eliminate lame duck sessions? No. Ratified in 1933, it moved the start of congressional terms from March 4 to January 3 and Inauguration Day to January 20, shortening the window from roughly four months to about two. It shortened the gap rather than closing it.

Want a political thriller you can’t put down? Claim your free copy of The Senate Deception, the award-winning prequel to the Bull Moose series — and join 3,000+ readers who never miss a release.

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About the author: Michael Fedor is the award-winning author of the Bull Moose political thriller series. Drawing on 20 years inside politics and campaigns, he writes pulse-pounding fiction about power, democracy, and the fragile machinery of the republic.