Vice President Biden opened the door to a potential presidential primary challenge to Biden . ` ` There is a chance '' Vice President Joe Biden opened the door Wednesday to a potential presidential primary challenge to former secretary of State Hillary Clinton in the Democratic primary . ` he 'll challenge her for the Democrats nomination , he said . Hillary Clinton says he has until 2016 to decide , and sees the field as `` wide open ''
Vice President Biden opened the door to a potential presidential primary challenge to Biden . `` There is a chance '' he 'll challenge her for the Democrats nomination , he said . Hillary Clinton says he has until 2016 to decide , and sees the field as `` wide open ''