The Big Four, Collis Huntington, Mark Hopkins, Leland Stanford, and Charles Crocker, ruled California government for 30 years. The southern Pacific Railroad was the single largest corporation in California and controlled 85 percent of the state's railroad tracks. Huntington handed out bribes to legislators, local police and government officials with impunity. At political conventions, agents of the railroad freely circulated the convention floor and dominated the smoke-filled rooms, arranging the nomination of pro-railroad candidates.