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>> reporter: i will drinking coughy and lookingñr for the tweets no doubt. and joe biden, they have a sixth podium waiting for the vice-president. and no signs of him diverting his planes west. i spoke to a top fundraiser and he said he believes he getting in but anyones guess. he is leaning and get in after the debate and not show up here tonight in las vegas. that would obviously scramble things big time. hillary clinton came out still leading the pack. and still watching bernie sanders close...