Barack Hussein Obama (born August 4, 1961) is the junior U.S. Senator from Illinois. According to the U.S. Senate Historical Office, he is the fifth African American Senator in U.S. history and the only African American now serving in the U.S. Senate. Obama delivered the keynote address at the 2004 Democratic National Convention while still serving in the Illinois State Senate. In November 2004, he was elected to the United States Senate by a landslide in a presidential election year marked by Republican gains. Recent opinion polls identify Obama as the second most popular choice among Democratic voters for their party's nomination in the 2008 U.S. presidential election.