female 2003-01-07 Republican 2009-01-03 1997-01-07 Republican 2002-11-22 2009-01-06 Republican 2014-12-31 Catholic Sen. Collins Susan M. http://collins.senate.gov 1952-12-07 C001035 Susan Collins Sen. Susan Collins Person Politician Term Democrat Mary Landrieu Democrat John Reed Republican Thad Cochran Republican Michael Enzi Democrat Thomas Harkin Democrat Mark Udall Democrat Mark Pryor Democrat John Kerry Democrat John Rockefeller Republican Saxby Chambliss Republican Pat Roberts Democrat Richard Durbin Republican Lamar Alexander Democrat Carl Levin 2009-07-07 Democrat Al Franken 2009-01-16 Democrat Edward Kaufman Republican James Inhofe Republican Lindsey Graham Republican Jefferson Sessions Republican John Cornyn Democrat Mark Begich Democrat Jeff Merkley Democrat Kay Hagan Democrat Jeanne Shaheen Democrat Frank Lautenberg Republican James Risch Democrat Mark Warner Republican Mike Johanns Republican Mitch McConnell Democrat Tom Udall Democrat Tim Johnson Democrat Max Baucus