How does the Electoral College work? 270, explained

The Electoral College is the system the US Constitution uses to elect the president, and it does not work as one national count: voters in each state choose electors, and the electors choose the president. Each state gets as many electors as it has members of Congress, Washington, D.C. gets three, and 48 states give all their electors to whoever wins the state's popular vote. There are 538 electors, so a candidate needs 270, a majority, to win.

In short

• A presidential election is 51 separate contests, one in each state and D.C., not one national count.
• Electors follow population roughly, but every state starts with two extra for its senators, so small states weigh more per person.
• If no one reaches 270, the House of Representatives picks the president, with one vote per state.

How many electors does each state get?

Each state's electors equal its seats in the House plus its two senators. The House has 435 seats and the Senate 100, and the 23rd Amendment, ratified in 1961, gave Washington, D.C., three electors, the number the smallest state has. That makes 435 + 100 + 3 = 538, and a majority is 270.

The House seats are shared out by population after each census, so electoral votes move with people. Under the 2020 census, which sets the numbers for the 2024 and 2028 elections, California has 54, Texas 40 and Florida 30, while the smallest states, such as Wyoming, Vermont and Alaska, have 3 each, as does D.C., according to the National Archives.

Why a small state counts for more

The two senate electors every state gets are the same for California and Wyoming, which tilts the weight toward small states. Using the Census Bureau's 2020 apportionment counts:

	California	Wyoming
Apportionment population, 2020	39,576,757	577,719
Electors	54	3
People per elector	about 733,000	about 193,000

Each Wyoming elector stands for about 193,000 people and each California elector for about 733,000, so a vote in Wyoming carries roughly 3.8 times the weight of one in California in the count that decides the presidency. Count only the House-based electors and the gap shrinks to about 1.3 to 1: one per 761,000 Californians against one per 578,000 people in Wyoming.

What happens on Election Day and after?

When people vote for president in November, they are formally choosing a slate of electors pledged to a candidate, chosen in advance by each party. The rest of the process runs on dates set in federal law.

Step	When	What happens
1. Election Day	Tuesday after the first Monday in November	Voters in each state choose a slate of electors
2. Certification	November and early December	Each state counts and certifies its result; the governor or another named official issues a certificate naming the electors
3. Electors vote	First Tuesday after the second Wednesday in December	Electors meet in their own states and cast separate votes for president and vice president
4. Congress counts	6 January	Both chambers meet together; the vice president presides and the votes are counted
5. Inauguration	20 January	The winner takes office

The Electoral Count Reform Act of 2022 tightened step 4 after disputes over the 2020 count. It says the vice president's role at the count is ministerial, with no power to reject electors, and it raised the bar for an objection to a state's votes to one-fifth of the members of both the House and the Senate.

Do all states give every elector to the winner?

Forty-eight states and D.C. use winner-take-all: the candidate with the most votes in the state, even with less than half, gets every elector. Maine, since 1972, and Nebraska, since 1992, do it differently. They give two electors to the statewide winner and one to the winner of each congressional district, so their votes can split, as Nebraska's did in 2008, 2020 and 2024 and Maine's did in 2016, 2020 and 2024.

Electors are almost always loyal to their party, but not every one has been. Thirty-seven states and D.C. have laws requiring electors to vote as pledged, according to the National Conference of State Legislatures. In Chiafalo v. Washington in July 2020, the Supreme Court held that states may enforce those pledges.

What if no one gets 270?

Then the decision goes to Congress, under the 12th Amendment. The newly elected House chooses the president from the top three, but each state delegation casts a single vote, so Wyoming's delegation counts the same as California's; a candidate needs a majority of states, 26 of 50. The Senate chooses the vice president from the top two, each senator voting.

The House has chosen a president twice. In 1800, Thomas Jefferson and his running mate Aaron Burr tied, because electors then cast two undifferentiated votes; the House needed 36 ballots to pick Jefferson, and the 12th Amendment followed in 1804 to separate votes for president and vice president. In 1824, with four candidates and no majority, the House chose John Quincy Adams even though Andrew Jackson had more electoral and popular votes. A 269–269 tie is possible today, and it would send the choice to the House the same way.

Why did the framers choose it, and can a candidate lose the popular vote and win?

The framers of the Constitution argued over the method for months. Some wanted Congress to choose the president, which risked making the president its servant; others wanted a direct popular vote, which delegates from small states and slave states opposed. Electors chosen by the states were the compromise. Because the seat count included three-fifths of enslaved people, the system also added to the weight of slave states until the Civil War.

Since the system counts states, the national popular vote and the electoral vote can point to different winners. That has happened five times: 1824, 1876, 1888, 2000 and 2016. In 2000, the outcome turned on Florida, where the certified margin was 537 votes, and every one of Florida's 25 electors went to the winner.

Still argued

Whether to keep the Electoral College is a long-running argument. Supporters say it makes candidates win across many different states rather than piling up votes in a few big cities, protects the role of the states in a federal system, and contains disputes, since a recount in one close state doesn't become a national recount. Critics say it makes some votes count more than others, focuses campaigns on a handful of swing states while most are ignored, and lets a candidate win with fewer votes nationally. In a Gallup poll in September 2024, 58% of Americans favored amending the Constitution to elect the president by popular vote and 39% favored keeping the current system, with Democrats (82%) far more in favor than Republicans (32%). An amendment needs two-thirds of Congress and 38 states. A workaround, the National Popular Vote Interstate Compact, would have member states give their electors to the national vote winner once states with 270 electoral votes join; its backers say 18 states and D.C., with 222 electoral votes, had joined by 2026.

The Electoral College is one of several places where the US puts states, not people, at the center of a democracy. Inside each state, the House districts that set part of the count are drawn by people with interests of their own, which is the subject of gerrymandering. And the elections between presidential ones, with no electors at all, are the midterms.

Check yourself

• Without looking back: where does the number 538 come from, and why is 270 the number to win?
• Why does a Wyoming vote carry more weight than a California vote in the Electoral College?
• What happens if no candidate reaches 270, and how is the House's vote different from its usual votes?

Sources

• What is the Electoral College? — National Archives, Office of the Federal Register
• Distribution of Electoral Votes — National Archives, Office of the Federal Register
• Electoral College Fast Facts — History, Art & Archives, U.S. House of Representatives
• The Electoral College — National Conference of State Legislatures
• Americans Still Favor Replacing Electoral College System — Gallup, 2024
• Written explanation of the National Popular Vote bill — National Popular Vote