When Americans vote for president, they are not voting directly for the person who will move into the White House. They are voting for a group of people called electors, who then cast the votes that actually elect the president and vice president. That indirect system is the Electoral College, and it decides every US presidential election. This guide explains how it works, using the official account of the National Archives, which administers the process.
A process, not a place
The first misconception to clear up is in the name. The National Archives states plainly: “The Electoral College is a process, not a place.” There is no college campus, no permanent body, and no single meeting hall where 538 people gather. The Founding Fathers established it in the Constitution, in part, as a compromise between electing the president by a vote in Congress and electing the president by a direct popular vote of qualified citizens. It has three stages: the selection of the electors, the meeting of the electors where they vote for president and vice president, and the counting of the electoral votes by Congress.
The 538 maths: where the number comes from
The Electoral College consists of 538 electors, and a majority of 270 electoral votes is required to elect the president. Each state has the same number of electors as it has members in its congressional delegation: one for each member in the House of Representatives plus two senators. The District of Columbia is allocated three electors and treated like a state for this purpose under the 23rd Amendment. That gives 435 House members plus 100 senators plus three for Washington, DC, which equals 538. Because House seats are allocated by population after each census, a state’s number of electors changes every decade. The current allocation is based on the 2020 Census and is effective for the 2024 and 2028 presidential elections.
The largest states carry the most weight. California has 54 electoral votes, Texas has 40, Florida has 30, and New York has 28. Pennsylvania and Illinois each have 19, Ohio has 17, and Georgia and North Carolina each have 16. At the other end, the smallest states — Alaska, Delaware, North Dakota, South Dakota, Vermont and Wyoming — each have three electoral votes, the minimum of one House seat plus two senators, as does the District of Columbia.
Winner-takes-all, and the two exceptions
When you vote for a presidential candidate, the National Archives explains, you are voting for your candidate’s preferred electors. Each candidate running for president in a state has their own group of electors, known as a slate, generally chosen by the candidate’s political party in that state.
In most states, the rule is winner-takes-all. All states except Maine and Nebraska have a winner-take-all policy, under which the state looks only at the overall winner of the statewide popular vote. Win a state by a single vote and you claim every one of its electoral votes; lose it narrowly and you get none. That is why candidates spend so much time and money in closely contested swing states, and comparatively little where the outcome is a foregone conclusion.
Maine and Nebraska are the two exceptions. They appoint individual electors based on the winner of the popular vote within each congressional district, and then two “at-large” electors based on the winner of the overall statewide popular vote. Maine has four electoral votes and Nebraska has five, so a split is possible. The National Archives notes that each has done so twice: Nebraska in 2008, Maine in 2016, and both Maine and Nebraska in 2020.
From election night to inauguration: the timeline
The general election is held every four years on the Tuesday after the first Monday in November. The next presidential election is on Tuesday 7 November 2028. On election night, television networks project winners within hours of polls closing, but those projections are not the legal result. After the election, each state counts and certifies its results, and the state’s chief executive prepares a Certificate of Ascertainment listing which individuals were appointed as the state’s electors. That certificate is sent to the National Archives.
The electors then meet in their respective states — not together in Washington — on the first Tuesday after the second Wednesday in December, cast separate ballots for president and vice president, as required by the 12th Amendment, and record their votes on a Certificate of Vote sent to Congress and to the National Archives. Congress counts the votes in a joint session on 6 January in the year following the election. The vice president, as president of the Senate, presides over the count in a strictly ministerial manner and announces the results. The Electoral Count Reform Act of 2022 clarified that the vice president’s role is purely ceremonial, and raised the threshold for objecting to a state’s votes to one-fifth of the members of each chamber. The president-elect is sworn in on 20 January in the year following the election.
What if nobody reaches 270?
If no candidate receives 270 electoral votes, the choice falls to Congress in a contingent election. The House chooses the president from among the top three vote-getters — but each state delegation casts one vote, regardless of size, so California’s 52 House members together cast one vote and Wyoming’s single member casts one vote. A candidate needs a majority of state delegations, 26 of 50, to win. The Senate chooses the vice president from among the two top candidates. A tie of 269–269 is the scenario most often discussed.
Can electors vote for someone else?
Electors are expected to vote for the candidate who won their state’s popular vote, and most states have laws requiring them to do so. An elector who votes otherwise is known as a faithless elector. In 2020, the Supreme Court ruled unanimously in Chiafalo v. Washington that states may enforce an elector’s pledge: Washington had fined three electors $1,000 each for voting for someone other than the candidate who won the state, and the Court upheld the fine. In a companion case decided the same day, Colorado Department of State v. Baca, the Court upheld Colorado’s policy of replacing electors who attempt to vote for a candidate who did not win the state’s popular vote. Faithless electors have never changed the outcome of a presidential election, but the rules vary by state.
Common misconceptions
The most common misconception is that the candidate who wins the most votes nationwide wins the presidency. A candidate can win the presidency while losing the national popular vote, as happened in 2000 and 2016, and earlier in 1888. The presidency is decided state by state, through electors, not by a single national tally. In the 2024 election, the National Archives records 312 electoral votes for Donald Trump and 226 for Kamala Harris, out of 538 — the official result.
A second misconception is that the electors meet as one national body. They do not: they meet in their own states in December, and their sealed certificates are then counted by Congress in January. A third is that the vice president can decide the outcome on 6 January. Under the Electoral Count Reform Act of 2022, the vice president’s role is ministerial, and an objection requires one-fifth of each chamber. A fourth is that election night decides the presidency. In a legal sense it does not: the result is projected on election night, certified by the states, voted on by the electors in December, and counted by Congress in January.
Why it still matters
The Electoral College shapes American politics beyond a single night in November. Because most states award all their electors to the statewide winner, candidates focus on the handful of states where the result is genuinely uncertain, and because small states are guaranteed at least three electors, their voters carry more weight per person than voters in the largest states. What matters here is the machinery: 538 electors, 270 to win, winner-takes-all in 48 states and the District of Columbia, a district method in Maine and Nebraska, electors voting in their states in December, Congress counting in January, and inauguration on 20 January. If you are following the next election, check your registration and your state’s rules — our guide to checking voter registration and mail-in ballots explains how — and our guide to how Supreme Court rulings work covers the institution that decided Chiafalo.