The United States presidential election of 1876 was one of the most disputed and intense presidential elections in American history. Samuel J. Tilden of New York defeated Ohio's Rutherford Hayes in the popular vote, and had 184 electoral votes to Hayes' 165, with 20 votes yet uncounted. These 20 electoral votes were in dispute: in three states (Florida, Louisiana, and South Carolina) each party reported its candidate had won the state, while in Oregon one elector was declared illegal (on account of being an "elected or appointed official") and replaced. The votes were ultimately awarded to Hayes after a bitter electoral dispute.

Many historians believe that an informal deal was struck to resolve the dispute. In return for Southern acquiescence in Hayes' election, the Republicans agreed to withdraw federal troops from the South, effectively ending Reconstruction. This deal became known as the Compromise of 1877. The Compromise effectively pushed African-Americans out of power in the government; soon after the compromise, African-Americans were barred from voting by poll taxes and grandfather clauses.