"Obama scores a record landslide" (PDF). Chicago Tribune. p. 1. Archived from the original (PDF) on May 13, 2011. Retrieved April 3, 2009.
Fornek, Scott (November 3, 2004). "Obama takes Senate seat in a landslide". Chicago Sun-Times. p. 6. Archived from the original on May 10, 2013. Retrieved April 3, 2009.

^ United States Congress. "Barack Obama (id: o000167)". Biographical Directory of the United States Congress. Retrieved October 12, 2011.

^ "Member Info". Congressional Black Caucus. Archived from the original on July 9, 2008. Retrieved June 25, 2008.

^ "Lugar–Obama Nonproliferation Legislation Signed into Law by the President". Richard Lugar U.S. Senate Office. January 11, 2007. Archived from the original on December 18, 2008. Retrieved April 27, 2008. See also: Lugar, Richard G.; Obama, Barack (December 3, 2005). "Junkyard Dogs of War". The Washington Post. Retrieved April 27, 2008.

^ McCormack, John (December 21, 2007). "Google Government Gone Viral". Weekly Standard. Archived from the original on April 23, 2008. Retrieved April 27, 2008. See also: "President Bush Signs Coburn–Obama Transparency Act". Tom Coburn U.S. Senate Office. September 26, 2006. Archived from the original on May 1, 2008. Retrieved April 27, 2008.

