Iowa Poll: Clinton leads, but Sanders draws near

Bernie Sanders, riding an updraft of insurgent passion in Iowa, has closed to within 7 points of Hillary Clinton in the Democratic presidential race.

She’s the first choice of 37% of likely Democratic caucusgoers; he’s the pick for 30%, according to a new Des Moines Register/Bloomberg Politics Iowa Poll.
But Clinton has lost a third of her supporters since May, a trajectory that if sustained puts her at risk of losing again in Iowa, the initial crucible in the presidential nominating contest.