 - 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 as a Democrat by a landslide in a presidential election year marked by Republican gains. He is married to Mrs. Michelle Obama and is a father to two young daughters.
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 - John Sidney McCain III (born August 29, 1936) is the senior U.S. Senator from Arizona, having served since 1987. He first became a national celebrity after being held as a prisoner of war for five and a half years in Vietnam. He was a presidential candidate in the 2000 election, but was defeated in the Republican primary by George W. Bush. On 15 November 2006, McCain announced he was forming an exploratory committee for a 2008 presidential campaign.
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