He's learning how to take it to HillBill:

DENVER (AP) - Democratic White House candidate Barack Obama on Wednesday said rival Hillary Rodham Clinton is too polarizing to win the presidency and she has taken positions shared by President Bush and Republican candidate John McCain for political expediency.

Obama depicted Clinton as a calculating, poll-tested divisive figure who will only inspire greater partisan divisions as she sides with Republicans on issues like trade, the role of lobbyists in politics and national security. At the same time, he elevated McCain, fresh off victory in Florida's crucial primary, as the likely Republican nominee.

"Democrats will win in November and build a majority in Congress not by nominating a candidate who will unite the other party against us, but by choosing one who can unite this country around a movement for change," Obama said, speaking as rival John Edwards was pulling out of the race in New Orleans, leaving a Clinton-Obama fight for the Democratic nomination.

"It is time for new leadership that understands the way to win a debate with John McCain or any Republican who is nominated is not by nominating someone who agreed with him on voting for the war in Iraq or who agreed with him in voting to give George Bush the benefit of the doubt on Iran, who agrees with him in embracing the Bush-Cheney policy of not talking to leaders we don't like, who actually differed with him by arguing for exceptions for torture before changing positions when the politics of the moment changed," Obama said.