In a 45-minute speech Wednesday night that observers described as his best in 20 years, Clinton had the flag waving delegates at the Democratic national convention in Charlotte, North Carolina, literally hanging on to his every word as he formally nominated Obama for a second-term.

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"We are fired up," chanted the crowd in the packed Times Warner Cable Arena as without any announcement Obama walked out on the stage as he finished, hugged Clinton, waved to the crowd, grinned widely and walked offstage.

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Amid repeated applause, a grey haired visibly weak Clinton framed the Nov 6 presidential election as a clear choice between a man who will promote united values rather than the winner-takes-all mentality of the rival Republicans.

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