With an almost 2-1 lead among women, former Secretary of State Hillary Clinton leads Sen. Bernie Sanders of Vermont 51 - 40 percent among Iowa likely Democratic Caucus participants, according to a Quinnipiac University poll released today. Former Maryland Gov. Martin O'Malley has 6 percent with 3 percent undecided.

This compares to the results of a November 25 survey by the independent Quinnipiac (KWIN-uh-pe-ack) University showing Clinton over Sanders 51 - 42 percent.

Today, women back Clinton over Sanders 59 - 32 percent, with 7 percent for O'Malley, while men back Sanders over Clinton 52 - 39 percent, with 5 percent for O'Malley.

Despite recent attacks, 35 percent of likely Democratic Caucus-goers say the economy and jobs are most important in deciding who to nominate, as 15 percent list health care, with 11 percent for climate change, 10 percent for foreign policy and 7 percent for terrorism.