For many Republicans, Mr Giuliani's chief virtue is that he has the best shot at beating Hillary Clinton.

ECONOMIST: The election: Who will take on Hillary? | The

But I remember when President Bush was beating Bill Clinton by 20 points.

CNN: About CNN Polls

We begin with Barack Obama who swept all four Democratic contests over the weekend beating Hillary Clinton to take the Louisiana primary and caucuses in Maine, Nebraska and Washington State.

NPR: Barack Obama's Big Weekend

Republican U.S. Rep. Ron Paul took the No. 1 spot in most-searched presidential candidates, beating out Hillary Rodham Clinton and Barack Obama.

FORBES: Only Online: Ron Paul Beats Hillary Clinton

Clinton and Obama both say they are more likely to beat McCain, but the poll shows each of them winning 49 percent against the Arizona senator, with Clinton topping McCain by five points and Obama beating him by four points.

CNN: poll: Obama losing support

The Rhinos' victory - their second in the fixture after beating Canterbury in 2005 - was marred by injuries to Danny McGuire, Clinton Toopi and Keith Senior.

BBC: Leeds 11-4 Melbourne

Obama supporters argue that their candidate has won so many more states and pledged delegates than Clinton that superdelegates should close ranks behind him so he can focus on beating the presumptive Republican nominee, John McCain.

NPR: Hundreds of Superdelegates Remain Undecided