of Congress. Additionally, the Twenty-third Amendment provides that the District of Columbia is entitled to the number it would have if it were a state, but in no case more than that of the least populous state. Currently, all states and D.C. select their electors based on a popular election held on Election Day. In all but two states, the party whose presidential-vice presidential ticket receives a plurality of popular votes in the state has its entire slate of elector nominees chosen as the state's electors. Maine and Nebraska deviate from this practice, awarding two electors to the statewide winner and one to the winner in each congressional district. On the first Monday after the second Wednesday in December, about six weeks after the election, the electors convene in their respective states (and in Washington D.C.) to vote for president and, on a separate ballot, for vice president. The certified results are opened and counted during a joint session of Congress, held in the first week of January. A candidate who receives an absolute majority of electoral votes for vice president (currently 270 of 538) is declared the winner. If no candidate has a majority, the Senate must meet to elect a vice president using a contingent election procedure in which senators, casting votes individually, choose between the two candidates who received the most electoral votes for vice president. For a candidate to win the contingent election, they must receive votes from an absolute majority of senators (currently 51 of 100). There has been only one vice presidential contingent election since the process was created by the Twelfth Amendment. It occurred on February 8, 1837, after no candidate received a majority of the electoral votes cast for vice president in the 1836 election. By a 33–17 vote, Richard M. Johnson (Martin Van Buren's running mate) was elected the nation's ninth vice president over Francis Granger (William Henry Harrison's and Daniel Webster's running mate). Tenure Inauguration Pursuant to the Twentieth Amendment, the vice president's term of office begins at noon on January 20, as does the president's. The first presidential and vice presidential terms to begin on this date, known as Inauguration Day, were the second terms of President Franklin D. Roosevelt and Vice President John Nance Garner in 1937. Previously, Inauguration Day was on March 4. As a result of the date change, both men's first terms (1933–1937) were short