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
African-American candidates for President of the United States Senator Obama was identified as a potential candidate for president of the U.S. after his speech at the 2004 Democratic National Convention. The distinct possibility of an African American becoming elected was realized as the Democratic primary elections got under way in early 2008. Barack Obama emerged as a serious contender for the nomination and was the first African American to win the nomination of a major party in a United States presidential election. As the Democratic Party's nominee he went on to win the general election on November 4, 2008. On January 20, 2009 he was sworn in as