Presidential transition of Barack Obama time of their election, President-elect Obama and Vice President-elect Joseph Biden were incumbent U.S. Senators from Illinois and Delaware respectively. In accordance with Article I, Section 6 of the United States Constitution, both were required to resign their respective Senate seats on or before January 20, 2009, in order to become President and Vice President. Obama resigned from the Senate effective November 16, 2008. Initially, it was thought that his replacement would be named by Illinois Governor Rod Blagojevich. Since the term for the seat expired in January 2011, it would come up for its normal election in 2010 with
First inauguration of Barack Obama culmination of the presidential transition of Barack Obama that began when he won the United States presidential election on November 4, 2008 and became the President-elect. In accordance with of the United States Constitution, Obama resigned from the United States Senate effective November 16, 2008. He was formally elected by the Electoral College on December 15, 2008. The results were certified by a joint session of Congress on January 8, 2009. Obama, who originally campaigned using the slogan "Change We Can Believe In" and later "Change We Need", was widely celebrated as the first African American president of the United