Just over three months before Iowans caucus for Democratic presidential candidates, four polls out this week present a muddled picture of a primary race that is unfolding in varying, and sometimes conflicting, ways nationally and in early-voting states.
A pair of new national polls present starkly different results. A CNN survey released Wednesday had former Vice President Joseph R. Biden Jr. with a commanding lead of 15 percentage points ahead of Senator Elizabeth Warren of Massachusetts. But a Quinnipiac University poll released Thursday had Ms. Warren as the front-runner, seven points ahead of Mr. Biden. CONT.
Matt Stevens & Giovanni Russonello, New York Times
Recent polls: Democratic presidential race