Passed in 1961, today is the anniversary of the 23rd Amendment. The Amendment allows D.C. to appoint electors to the Electoral College, as Congress so directs. Article I §8 of the Constitution gives Congress exclusive control over the seat of government.
D.C. residents first cast their ballots in a Presidential election on November 3, 1964. Their votes helped elect Lyndon B. Johnson.
The District currently has 3 electoral votes, based on population.
Read the 23rd Amendment here.
