Electoral College 

The system established by the U.S. Constitution for electing the president and vice president, in which voters in each state choose a slate of electors who then cast the official votes for president. The Electoral College has 538 total electors, a number equal to the total membership of Congress plus three electoral votes for the District of Columbia granted by the 23rd Amendment. A candidate must win at least 270 electoral votes to win the presidency. The system was designed by the framers as a compromise between electing the president by a direct popular vote and having Congress choose the president.

A vote cast by a member of the Electoral College for president or vice president. Each state has a number of electoral votes equal to its total number of senators and representatives in Congress. Electoral votes are the votes that formally determine who becomes president, not the popular votes cast by individual citizens on Election Day. A candidate can win the presidency by winning the right combination of states even if they receive fewer total popular votes nationwide, which has happened five times in U.S. history.

The total number of individual votes cast by citizens in an election. In presidential elections, the popular vote refers to the nationwide tally of all votes cast for each candidate. Because the president is elected through the Electoral College rather than by direct popular vote, a candidate can win the presidency without winning the popular vote, as occurred in 2000 and 2016. The disconnect between the popular vote and the Electoral College outcome is one of the central arguments made by advocates for electoral reform.

The method used by 48 of the 50 states, in which all of a state's electoral votes are awarded to the candidate who wins the most popular votes in that state, regardless of the margin of victory. Winner-take-all means that votes cast for the losing candidate in a state have no effect on the Electoral College outcome, which critics argue makes voters in non-competitive states effectively irrelevant to the presidential race. Maine and Nebraska are the two exceptions, using a congressional district method instead.

The system used by Maine and Nebraska, in which electoral votes are not awarded on a winner-take-all basis statewide. Instead, two electoral votes go to the winner of the statewide popular vote, and one electoral vote is awarded to the winner of the popular vote in each individual congressional district. This means these states can split their electoral votes between candidates, which has happened in both states in recent elections.

A member of the Electoral College who casts their electoral vote for a candidate other than the one they were pledged to support based on their state's election results. Faithless electors are rare and have never changed the outcome of a presidential election. In 2020, the Supreme Court ruled in Chiafalo v. Washington that states may legally require electors to vote for the candidate they are pledged to and may enforce that requirement with penalties, a decision that significantly reduced the practical risk of faithless electors affecting future elections.

A member of the Electoral College who has committed to voting for a specific presidential candidate if that candidate wins their state's popular vote. Electors are typically chosen by political parties and are expected to be loyal supporters of their party's nominee. Following the Supreme Court's 2020 ruling, most states with laws binding electors to their pledge can enforce those commitments with financial penalties or by replacing a defecting elector.

A person who serves as a member of the Electoral College and casts an official vote for president and vice president. Presidential electors are selected through processes determined by each state, typically chosen by the political parties at state conventions or central committee meetings. Most voters never know the names of the electors they are technically voting for when they cast a presidential ballot. Serving as a presidential elector is largely ceremonial but carries real constitutional significance.

The minimum number of electoral votes a presidential candidate must win to be elected president, representing a majority of the 538 total electoral votes. The number 270 is central to presidential campaign strategy, as campaigns focus their resources on winning the specific combination of states needed to reach that threshold rather than maximizing their total national vote. If no candidate reaches 270 electoral votes, the election is decided by the House of Representatives under the 12th Amendment.

A state that is considered certain or near-certain to vote for one party's presidential candidate based on its consistent historical voting patterns and demographic composition. Safe states receive relatively little attention or campaign spending in presidential elections because the outcome is considered a foregone conclusion. The existence of large numbers of safe states concentrates presidential campaign activity in a small number of competitive battleground states.

A state in which neither major party has a dominant advantage in presidential elections, making it genuinely competitive and likely to be decided by a relatively small number of votes. Battleground states, also called swing states or purple states, receive a disproportionate share of presidential campaign attention, advertising spending, candidate visits, and get-out-the-vote efforts. A small number of battleground states effectively determine the outcome of most presidential elections under the current Electoral College system.

Another term for a battleground state, referring to a state whose electoral votes could plausibly go to either major party's presidential candidate in a given election. The term reflects the idea that these states can swing from one party to the other from election to election. Which states are considered swing states changes over time as demographics, economic conditions, and political alignments shift.

A visual representation of the United States showing how electoral votes are distributed among the states and, during or after an election, which candidate has won or is projected to win each state's electoral votes. Electoral maps are a central tool of presidential campaign coverage and analysis, with states typically colored red for Republican, blue for Democrat, and sometimes yellow or gray for undecided or too-close-to-call races.

An agreement among a group of states to award all of their electoral votes to whichever presidential candidate wins the national popular vote, regardless of who wins in their individual state. The compact is designed to effectively implement a national popular vote for president without requiring a constitutional amendment. It would only take effect once states totaling at least 270 electoral votes have joined. As of the most recent updates, states representing a significant portion of the required electoral votes have signed on, but the compact has not yet reached the threshold needed to take effect.

The constitutional amendment, ratified in 1804, that changed the process by which the president and vice president are elected through the Electoral College. Before the 12th Amendment, the candidate who received the most electoral votes became president and the runner-up became vice president, a system that produced significant problems in the early republic. The amendment required electors to cast separate votes for president and vice president and established the process by which the House of Representatives chooses the president if no candidate wins a majority of electoral votes.

The constitutional amendment, ratified in 1933, that changed the dates on which presidential and congressional terms begin and end. Before the 20th Amendment, there was a lengthy gap between Election Day and the start of the new president's term, leaving outgoing officials in power for months after losing their elections. The amendment moved the presidential inauguration from March 4 to January 20 and set the start of new congressional terms to January 3, significantly shortening the lame duck period.

A federal law, originally passed in 1887 and significantly revised in 2022, that governs the process by which Congress counts and certifies the electoral votes cast by states following a presidential election. The original law was passed in response to the disputed 1876 presidential election and contained ambiguous language that created uncertainty about Congress's role in certifying results. The 2022 revision clarified that the vice president's role in presiding over the count is purely ceremonial, raised the threshold required for members of Congress to object to a state's electoral votes, and established clearer standards for what constitutes a valid slate of electors.

The formal meeting of the U.S. Senate and House of Representatives held on January 6 following a presidential election to count and certify the electoral votes submitted by the states. The session is presided over by the vice president in their role as president of the Senate. Under the revised Electoral Count Act, members of Congress may object to a state's electoral votes only on narrow grounds and only with the support of at least one-fifth of each chamber. The joint session formally confirms the winner of the presidential election and is the final step in the Electoral College process before inauguration.