John Russell "Russ" Carnahan (/ˈkɑrnəhæn/; born July 10, 1958) was the U.S. Representative for Missouri's 3rd congressional district, serving from 2005 to 2013. He is a member of the Democratic Party.The district includes the southern third of the city of St. Louis (known as South City) and most of the southern St. Louis suburbs including most of Jefferson County and all of Ste. Genevieve County.