CNN CNN Newsroom With Carol Costello December 31, 2015 14:57:00
Contempt side may be one that never happened. after months of speculation, vice president joe biden decide not to run for president, solidifying clinton's spot as at the expected democratic nominee. >> while i will not be a candidate, i will not be silent. i intend to speak out clearly and forcefully. >> reporter: in the republican race, friends turned rivals on display as jeb bush looking to finally find some campaign mojo took on his former protege marco rubio. >> when you signed up for this, this was a six-year term. and you should be showing up to work. >> someone quinsd you that attacking...