1877. Grant took office in the aftermath of the Civil War, and he presided over much of the Reconstruction Era. A Republican, Grant became president after defeating Democrat Horatio Seymour in the 1868 presidential election. He was reelected in 1872 in a landslide victory, overcoming a split in the Republican Party that resulted in the formation of the Liberal Republicans, which nominated Horace Greeley to oppose him. He was succeeded as president by Republican Rutherford B. Hayes after the contested 1876 presidential election.