"I take all of these public polls with a grain of salt," longtime Clinton adviser Joel Benenson told CNN's Wolf Blitzer when the survey was released. "There's a lot of frustration with politicians generally."
Hillary Clinton alone at top even as Democrats re-examine their 2016 options →
He said in 14 state polls conducted across eight swing states since Oct. 4, Mr. Obama led among women "in every single one."
In battleground states, race is now hand-to-hand combat →