Clinton has said that she will throw her support behind Obama when she formally ends her challenge for the nomination at an event in Washington DC on Saturday."I will be speaking on Saturday about how together, we can rally the party behind Senator Obama," the former first lady said in a message to supporters.Running mateThere is speculation Obama might pick Clinton as his running mate for November's presidential election against John McCain, the presumptive republican candidate. In focus In-depth coverage of the US presidential electionObama has said the choosing of a vice-presidential candidate would take time, and on Thursday Clinton sought to distance herself from efforts by supporters to convince Obama to pick her. "While Senator Clinton has made clear throughout this process that she will do whatever she can to elect a Democrat to the White House, she is not seeking the vice presidency, and no one speaks for her but her," a statement from her campaign said.
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At a rally in Virginia, Obama shared the media spotlight with Jim Webb, the state senator.Emphatic endorsement
Webb, who had remained neutral as Obama and Clinton battled for the nomination, gave the Illinois senator an emphatic endorsement as he introduced him.
"I'm honoured to stand alongside this man, a man of great intellect who over the past 16 months has impressed all of us as he stood up to sometimes withering attacks with measured responses, unshakable composure," Webb said.