How the Electoral College works, from ballot to congressional count

The answer to “how does the Electoral College work” is that voters choose a presidential ticket’s slate of electors in their state, and those electors later cast the formal votes for president and vice president. The candidate who wins a majority of the 538 electoral votes—270—wins, so the national popular-vote total does not by itself decide the presidency.

The Electoral College is a constitutional process rather than a physical place. It has three stages: states select electors through the general election, electors meet in their own states to vote, and Congress counts those votes, as the National Archives explains.

How does the Electoral College work after you cast a ballot?

Presidential elections have two connected tracks. The first is the popular vote: the votes cast by people in each state. The second is the electoral vote: the formal votes cast later by the people appointed as that state’s electors.

On the ballot, voters usually see the names of the presidential and vice-presidential candidates, rather than a list of electors. But a vote for a ticket is, in effect, a vote for that ticket’s pledged slate of potential electors. Candidates submit those lists under state procedures; political parties commonly select their own potential electors, according to the U.S. Election Assistance Commission.

1. Voters cast ballots in the November general election. Each state produces its own popular-vote result for president.

2. That result determines which slate is appointed in the state, under its allocation rules. The state prepares a Certificate of Ascertainment, an official record that lists the candidate slates, vote totals and appointed electors.

3. In December, the appointed electors meet in their respective states, not as one national gathering. They cast separate ballots for president and vice president.

4. The states send the formal electoral-vote records to Congress. In a joint session in January, Congress counts the votes, with the vice president presiding as president of the Senate in a ministerial role, and announces the result.

The public often learns a likely winner shortly after state vote counts are clear. That projection is different from the formal Electoral College vote and Congress’s count. The formal steps matter because the Constitution assigns the final selection process to electors and Congress, not to a single nationwide tally.

Why are there 538 electoral votes?

Each state receives a number of electors equal to its representation in Congress: one for every House member plus two for its senators. Washington, D.C., receives three electors under the Twenty-Third Amendment. The result is 538 electors in all, and more than half—270—is needed to elect a president.

House seats are tied to population and may change after the decennial census, while every state has two senators. That is why states have different electoral-vote totals. The Congressional Research Service also notes that U.S. territories do not participate in the Electoral College or the general presidential election.

Electors are individuals, not automatic votes attached to a map. States decide how to appoint them, although the Constitution bars members of Congress and people holding a federal office of trust or profit from serving. State law also sets important rules about electors’ responsibilities.

There is one additional constitutional voting rule for the electors: at least one of an elector’s votes must be for a person from outside the elector’s state. Electors cast one vote for president and one for vice president, as the Election Assistance Commission states.

Does every state give all its electoral votes to one candidate?

Usually, yes. Forty-eight states and Washington, D.C., use winner-take-all allocation: the ticket with the most votes statewide receives all of that state’s electoral votes. A candidate does not need a majority of that state’s popular vote under this rule; finishing ahead of every other ticket is enough.

Maine and Nebraska use a different formula. The statewide winner receives two electoral votes, reflecting the state’s two senators. The winner in each congressional district receives one electoral vote for that district. A state’s votes can therefore be split between tickets in Maine and Nebraska, unlike under the usual statewide winner-take-all system.

A small hypothetical shows the effect. Assume a winner-take-all state has 10 electoral votes and Candidate A wins its popular vote by 51% to Candidate B’s 49%. Candidate A receives all 10 of that state’s electoral votes, while Candidate B receives none from that state. This is only an illustration, but it shows why winning individual state contests, and the number of electoral votes attached to them, determines the Electoral College result.

Why can the national popular-vote winner lose the presidency?

The national popular vote adds every ballot cast across the country. The Electoral College instead converts state-level results into electoral votes under each state’s allocation method. Since most states award all their electoral votes to the statewide winner, the candidate with the most votes nationally can still finish short of 270 electoral votes.

This outcome is possible without changing any state’s official vote count. It follows from the fact that presidential candidates are chosen through the Electoral College process rather than directly by a nationwide popular vote, as USAGov explains. A popular-vote lead concentrated in some states does not automatically translate into electoral-vote victories in enough states.

The distinction applies only to the presidency and vice presidency. Congressional, state and local contests use their own rules and are generally decided directly by the popular vote in the relevant district, state or locality.

What happens if nobody reaches 270 electoral votes?

If no presidential candidate receives an electoral-vote majority, the election goes to the House of Representatives. The House chooses from the top three presidential candidates, and each state delegation casts one vote. A majority of the states is required to choose the president.

The vice presidency follows a separate route if no candidate wins an electoral-vote majority for that office. The Senate chooses from the top two vice-presidential candidates. These are called contingent-election procedures, and they are set out through the Twelfth Amendment framework described by the Congressional Research Service.

That possibility is different from a close popular vote or a close electoral-vote margin. The trigger is the absence of an electoral-vote majority, not the size of the winning margin.

Practical takeaway

A presidential ballot has a direct role in selecting the electors for the voter’s state, but the presidency is decided through the full sequence that follows: state results appoint electors, electors formally vote in December, and Congress counts those votes in January. To follow the result, watch both the state popular-vote outcomes and the electoral-vote total on the path to 270.

Frequently asked questions

Who are Electoral College electors?

Electors are people appointed by the states to cast the formal Electoral College votes for president and vice president. Each presidential ticket has a slate of potential electors in each state, selected under state procedures. Members of Congress and people holding certain federal offices cannot serve as electors.

Do electors meet in one place?

No. Electors meet and vote in their respective states rather than as a single national body. Their certificates are then sent for Congress to count in a joint session.