James G. Blaine was one of the leading national political figures of his day, and probably the most controversial. Intensely partisan, the dominant leader of the Republican Party, and a major shaper of national politics for more than a decade, Blaine is remembered chiefly for his role as architect of the post-Civil War GOP and his two periods as secretary of state. He also was the Republican presidential candidate in the notorious mud-slinging campaign of 1884. His foreign policy was marked by its activism, its focus on Latin America, and its attempt to increase U.S. influence there.