WRAPUP 7-Clinton shuffles team to blunt Obama's momentum

(Adds quote from Obama on Maine win)

By Caren Bohan

WASHINGTON, Feb 10 (Reuters) - As she struggles to blunt Barack Obama's growing momentum, Democrat Hillary Clinton shuffled her campaign staff's leadership on Sunday ahead of this week's U.S. presidential nominating contests, while her rival celebrated a victory in the Maine caucuses.

Clinton replaced her campaign manager after a string of losses on Saturday, though aides played down any notion the move was a sign of trouble for the New York senator in her tight state-by-state fight with Obama to be the Democratic nominee for the Nov. 4 election.

Obama, an Illinois senator who would be the first black president, won in Maine after easy victories on Saturday in Louisiana, Nebraska and Washington state, and is rolling confidently into Tuesday's so-called Potomac primaries in Washington D.C., Maryland and Virginia.

John McCain, an Arizona senator who became the likely Republican nominee last week when his chief rival dropped out, lost two of three state contests on Saturday but got a vote of confidence from President George W. Bush on Sunday.

Clinton, who would be the first woman president, said in a statement that Maggie Williams, a top aide when she was first lady, had taken over from Patti Solis Doyle as her campaign manager. Solis Doyle will move into the role of senior adviser.

Clinton did not spell out why Solis Doyle was being replaced and a Clinton spokesman said the move did not reflect any change in the candidate's overall strategy.

But Larry Sabato, a political science professor at the University of Virginia, said the shake-up "can't be a good sign."