running. >> i'm behind hillary if she runs. that's up to her. if she runs, i'm in. >> clinton seems to have a higher profile than the sitting vice president as candidates carve out the places in the evolving 2016 field. we are still getting port mort em from the last campaign with the new book, double down reveals in late 2011 the president's team led by then chief of staff bill daley had polling and focus groups paid for to measure how voters might react to replacement on the ticket from vice president biden to hillary clinton. this is what daley told the "new york times." i was vocal about looking into a burch of things and this was one of them. you have to remember at that point the president was in awful shape and i was like holy christ, what do we do? the senior adviser responded via twitter never any consideration of a vp switch were entertained by the only person who mattered