Clinton calls for Democratic unity

By John Whitesides, Political Correspondent

DENVER (Reuters) - Hillary Clinton delivered a ringing call for Democratic Party unity on Tuesday, promising to work for Barack Obama and challenging her supporters to bury their grudges and rally behind his White House bid.

"Whether you voted for me or voted for Barack, the time is now to unite as a single party with a single purpose," said Clinton in a speech Democrats hope will end a lingering party rift left over from their bitter nominating fight.

Clinton, a New York senator, praised Obama and said Democrats could not sit on the sidelines and watch Republican presidential candidate John McCain take the White House and "squander the promise of our country."

"No way, no how, no McCain. Barack Obama is my candidate and he must be our president," Clinton told a roaring crowd waving a sea of white "Hillary" signs.

Clinton calls for Democratic unity....