LOUISVILLE, Ky. - Barack Obama stepped to the brink of victory in the Democratic presidential race Tuesday night, defeating Hillary Rodham Clinton in the Oregon primary and moving within 100 delegates of the ...

New York Sen. Hillary Clinton acknowledges supporters during her Kentucky primary election- night rally in Louisville, May 20, 2008.

Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., acknowledges supporters during her Kentucky primary election night rally Tuesday, May 20, 2008, in Louisville, Ky.

Democratic front-runner Barack Obama moved closer to a victory in the presidential nomination race, capturing a majority of pledged delegates as the two end-game primaries saw him and rival Hillary Clinton ...

Democratic presidential candidates Barack Obama and Hillary Rodham Clinton will both be in Florida Wednesday after avoiding the state since last fall.

Hillary Clinton won the Kentucky primary election, Tuesday, by a margin of more than two to one, but Barack Obama won the race in Oregon and passed a milestone in the Democratic Party's presidential contest.

Barack Obama stepped to the brink of victory in the Democratic presidential race Tuesday night, defeating Sen.

Despite Sen. Hillary Clinton's landslide victory in Kentucky, her rival Sen. Barack Obama has reached a new milestone of winning a majority of pledged delegates in the race for the Democratic nomination.

Barack Obama is quietly planning to take over the Democratic National Committee and assemble a multistate team for the general election, the latest sign that he is putting rival Hillary Rodham Clinton and the ...

IT IS NOT news that presumptive Republican nominee John McCain acknowledges global warming and supports a cap-and-trade program to reduce carbon-fuel emissions.