Faithless electors have never changed the outcome of a US presidential election.

The Electoral College is the system the United States uses to elect its president, allocating 538 electors across the states rather than relying on a single national vote.

How the Electoral College actually works

In settling on the rules for how the US elects presidents, the Founding Fathers coalesced around a system built on two inputs: Votes from individual voters, and the accumulation of votes from specially chosen Electors. The latter comprise the US Electoral College, and this Washington Post article explains why it exists, how it works, and how its 538 electors collectively decide presidential elections.

Electors are chosen by states and political parties

This article explains how the Constitution leaves most rules for choosing electors to the states. Today, parties typically select elector slates through state conventions, rewarding loyal supporters who formally cast votes weeks after Election Day.

What is the Electoral College?

US presidential elections are not “majority rules” contests. A complex mechanism underpins them, guided by the Electoral College system established by the Constitution. This US government website offers an overview of that system, which apportions “electors” for each state and requires winning presidential candidates to secure at least 270 Electoral votes on election night.

Five US presidents won the election despite losing the popular vote

Because presidents are elected through the Electoral College rather than a national vote, candidates can win while receiving fewer votes nationwide. John Quincy Adams, Rutherford B. Hayes, Benjamin Harrison, George W. Bush, and Donald Trump (2016) each won the presidency while losing the nationwide popular vote.

The wildest cases of election fraud in US history

The USA has seen some crazy elections. Election fraud is vanishingly rare now, but here are the craziest cases of election fraud in U.S. history.

A 1960s effort came close to abolishing the Electoral College

This podcast episode examines the closest attempts in US history to eliminate the Electoral College, focusing on a major 1960s reform push—and why, despite broad support, it ultimately failed.

Supporters argue that the Electoral College strengthens federalism and election stability

Defenders of the Electoral College argue it preserves federalism, forces candidates to build broad national coalitions, magnifies victory margins to reduce recount disputes, and limits incentives for voter fraud by containing the impact of contested ballots within individual states.

Why the Electoral College exists and how it works

The framers created the Electoral College as a compromise between electing the president by popular vote or by Congress. It was meant to balance power between large and small states and to allow elites to intervene if voters chose an unfit candidate.

Nate Silver argues the Electoral College can reduce the impact of excess votes

In this article, Silver weighs the Electoral College's flaws—especially popular-vote inversions—against its advantages, arguing it can limit the effect of surplus votes in heavily one-sided states and encourage broader competition.

A majority of Americans support replacing the Electoral College with a popular vote.

270 electoral votes decide the presidency

A presidential candidate is declared the winner once they reach 270 of the Electoral College’s 538 votes. This interactive map from 270 to win shows how winning individual states shifts the path to victory on election night.

Congress selected the president in 1801 and 1825

In a contingent election, the United States House of Representatives is constitutionally required to choose the president, with each state delegation casting one vote when no candidate secures a majority of the electoral votes.

Hear an oral history of the Electoral College and why it still exists

This podcast episode traces how the Electoral College emerged from rushed compromises, slavery-era power politics, and party maneuvering—showing why the system looks the way it does today and why efforts to change it have repeatedly stalled.

While studies have shown that voter fraud in the US is extremely rare, its elections are considered the 35th fairest in the world according to the 2025 Free and Fair Elections Index—a list topped by Belgium and Norway.

The Electoral College emerged as a compromise at the 1787 Constitutional Convention

This explainer traces how the Founding Fathers designed the Electoral College as a middle ground—balancing fears of direct popular rule against concerns about giving Congress the power to choose the president.

The presidential election process continues for weeks after Election Day

Even after a winner is projected, the election is not complete. Between Election Day and Inauguration Day, electors formally cast votes and Congress meets in a joint session to certify the results, following a constitutionally defined timeline.

Each state’s Electoral College votes mirror its representation in Congress

This overview explains how states receive electors equal to their senators and representatives, and details the legal framework governing how the Electoral College functions during presidential elections.

Critics say that the Electoral College is outdated and favors small states

This article argues that the Electoral College no longer reflects modern democratic norms, disproportionately advantages smaller states, and warrants broader reform and national debate. (Some readers may experience a paywall.)

The Electoral College was shaped in part to balance North–South power

This article examines how the Electoral College emerged from political compromise, including efforts to placate slave-owning Southern states and concerns that Northern states would dominate a direct national presidential vote.

See the results of all 59 presidential elections from 1789 to 2024

This interactive tool lets users explore the outcomes of every US presidential election from George Washington's uncontested 1789 victory through 2024, showing how electoral votes, state results, and shifting coalitions shaped each race.

How Americans have voted throughout history

From shouting candidates’ names, to hanging chads to electronic scanning, the nature of voting has a long, sometimes bumpy history in the United States. See descriptions and images in chronological order with this digestible timeline.

Listen to scholars debate abolishing the Electoral College

In this 2016 podcast episode, Harvard's Alex Keyssar and UVA's James Ceaser debate why the Electoral College was created, how parties reshaped it, and what reforms—national popular vote, runoffs, district allocation—could replace it.

The worst election polling fails in US history

Presidential pollsters in the US have had some embarrassing failures. Here’s a catalog of those miscalls, from the scholar who literally wrote the book on them.

Most US House seats stay with the same party for decades

An analysis by the Pew Research Center shows that since the 1920s, the vast majority of House districts have been consistently won by the same party, with only a small share regularly changing hands. This highlights the large advantage incumbents have in House elections.

Congress created a special electoral commission to resolve the 1876 election

After multiple states sent competing electoral slates in 1876, Congress formed the Electoral Commission of 1877 to arbitrate the dispute, which ultimately awarded the presidency to Rutherford B. Hayes and prompted later reforms to the electoral count process.

Washington was elected unanimously twice to the presidency

George Washington was unanimously elected in 1789 and 1792, with every presidential elector casting one of their two votes for him (at the time, each elector cast two votes). He accepted the office reluctantly, seeing it as a duty rather than an ambition.

Hamilton's endorsement helped win Jefferson the presidency

In the 1800 presidential election, neither candidate won a majority in the Electoral College, sending the decision to the House of Representatives. After 36 failed votes, Alexander Hamilton lobbied for his ideological rival, Thomas Jefferson, over Aaron Burr, helping break the deadlock.

Election 101 podcast

What’s actually at stake when someone casts their vote in a US election? CNN’s “Election 101” podcast series provides ten episodes summarizing some of the basics of democratic elections. The ins and outs of voting are highlighted in 15-minute episodes on voter registration and voting by mail. Additional segments highlight how the electoral system works, how ballots are counted, the Electoral College, why it takes so long to get election results, and more.

Thousands of state voting changes have been federally blocked since the Voting Rights Act

Since 1965, federal oversight has blocked thousands of state-level voting changes—including redistricting plans—by requiring approval for measures that could affect minority representation, a process scaled back by the Supreme Court in 2013.

Gerald Ford is the only president never elected to the office

Ford's ascent to the nation's highest office was a direct consequence of the unprecedented political upheaval caused by the Watergate scandal. Initially appointed vice president in October 1973 after Spiro Agnew's resignation, Ford assumed the presidency less than a year later, in August 1974, following Richard Nixon's resignation.

Why Congress doesn't have term limits

Eighty-seven percent of Americans want term limits for Congress. So why don't they exist? The Founders debated this in 1787 and chose not to include them, believing elections would be enough. In the 1990s, 23 states tried to make it happen—until the Supreme Court struck them all down in a 5-4 decision.

Understand the US electorate demographics

Ever wonder how much of each group make up the American voting bloc? Find raw data from the '16 and '18 elections broken out by a variety of factors (click on "validated voters database" link).

Nixon's landslide in the 1972 presidential election

Despite the Watergate break-in becoming public in June 1972, voters largely shrugged it off. On Nov. 7, 1972, Richard Nixon still achieved a historic landslide—winning 520 out of 538 electoral votes, carrying 49 states—making it one of the largest Electoral College victories in US history.

In 2003, an electronic voting system in Belgium reported that a political party received more votes than was possible—a result that was attributed to a glitch caused by a cosmic ray.

Presidents can veto laws—and Congress can override them

A president may veto legislation passed by Congress, but a two-thirds vote in both the House and Senate can override it. For most presidents, only a small share of their vetoes have been successfully overturned.

Madison once lost an election because he refused to give voters free alcohol

After serving in Virginia's 1776 convention, James Madison lost a 1777 house of delegates race after refusing to bribe voters with liquor, which he believed violated republican principles.

Abraham Lincoln received only 40% of the popular vote in the 1860 election, highlighting the deep divisions in the country on the eve of the Civil War.

Exciting US primary debate moments from history

Presidential debates in the US are highly-touted events viewed as the capstone of a campaign, but their impact on the overall polling is often undetectable. Nonetheless, the televised events can be really entertaining as candidates sweat under the pressure of a live mass audience, and most morning after news round-ups contain some of the event's notable—or cringey—moments. Here's a quick, three-minute video of highlights of some of the more fascinating moments from US primaries.

Thousands of constitutional amendments have failed

Of nearly 12,000 proposed constitutional amendments, only 27 were ratified. This article highlights radical failed proposals that would have renamed the country, abolished the presidency, capped personal wealth, or fundamentally rewritten how American democracy works.

Explore a comprehensive archive of US presidential election data

This University of California, Santa Barbara archive compiles presidential election data from 1789 to the present, including popular vote totals, turnout figures, and contextual resources that explain how the electoral process and political landscape have evolved.

The 2024 US presidential election was a breakthrough moment for prediction markets

Founded in 2018 by MIT graduates, Kalshi won a federal appeals court ruling in October 2024 that allowed it to offer election contracts in the US. When prediction markets predicted President Donald Trump's win (more accurately than most polls), prediction markets were thrust into the public eye.

Presidents can be impeached for 'treason, bribery, or other high crimes and misdemeanors'

The Constitution empowers the House to impeach a president by a majority vote and the Senate to convict by a two-thirds vote. Three presidents—Andrew Johnson, Bill Clinton, and Donald Trump (twice)—were impeached, though none were removed from office.

How presidential systems differ from parliamentary governments

In presidential systems like the US, the executive and legislature are separately elected, giving presidents fixed terms and independent authority. In parliamentary systems, executives are elected by legislatures and can be removed by a simple vote of no confidence.

Voter turnout in local elections is significantly lower than for national elections

While 64% of eligible voters cast ballots in the 2024 presidential election, turnout in municipal elections is usually below 15%. For school board elections—where members oversee more than 50 million students and $600B in spending—turnout is often around 5%-10%.

Before the BCS and Playoff systems, polls often sparked controversy over college football champions

For decades, national titles were awarded by polls like the AP and Coaches’ rankings—leading to split championships, heated debates, and disputed claims whenever top teams finished with identical records.

Voting by mail is safe and secure, and used by voters of both political parties.

Mid-decade redistricting is historically rare in modern US history

States have generally redrawn districts only once per decade following the census, with mid-decade redistricting occurring infrequently and usually prompted by court orders or unusual political circumstances.

Modern prediction markets—the platforms where people can trade bets that pay out depending on certain event outcomes—started in Iowa in 1988.

Some novel ideas to improve presidential debates

The first televised presidential debates of 1960 were seemingly so consequential, candidates opted not to participate in one for 16 years. In the last 60 years, debate format has changed frequently as the political parties and news outlets vie for rules to either protect candidates or increase TV ratings. In this brief video, one expert suggests five interesting innovations to the debate format to make them more informative for the average US voter.