Mary Landrieu (born November 23, 1955) is a Democratic United States Senator for the state of Louisiana. She is the daughter of former New Orleans mayor Maurice Edwin "Moon" Landrieu and the sister of current Louisiana Lt. Governor Mitch Landrieu. Landrieu is one of the more conservative Democrats in the U.S. Senate.
Mary Landrieu was born in Arlington, Virginia, and raised in New Orleans, Louisiana. She graduated from Louisiana State University in Baton Rouge in 1977. She was a member of the Louisiana House of Representatives, from 1980 to 1988. She then served as Louisiana state treasurer from 1988 to 1996. Landrieu was an unsuccessful candidate in the 1995 gubernatorial race in Louisiana - she finished third in the state's qualifying primary (sometimes referred to as the "jungle" primary) - thus failing to make the run-off which effectively becomes the general election in Louisiana. The eventual winner was Democrat-turned-Republican Mike Foster.