Bernie Sanders' lead over Hillary Clinton in New Hampshire is on the rise, with the Vermont senator leading the former secretary of state by 27 points, 60% to 33%, a new CNN/WMUR poll has found. The latest CNN/WMUR poll found that 70% of likely male voters in New Hampshire now support Sanders, whereas only 26% support Clinton.

Mrs Clinton remains confident of winning the Iowa caucus, which takes place ahead of the New Hampshire primary.

Jeff Weaver, Sanders' campaign manager, says that the result of the poll reflects how Sanders gained support through the months.

Sanders indicated the Human Rights Campaign and Planned Parenthood were "establishment" groups during an interview on MSNBC's "Rachel Maddow Show" when the host asked about the organizations' decision to support Hillary Clinton.

In the first question of the final Democratic presidential debate before the Iowa caucuses, front-runner Hilary Clinton, Vermont Sen.

She added: "The Republicans want Bernie Sanders" as the Democratic nominee. Clinton has a comfortable 64 percent to 24 percent lead with voters over 50, who compose the majority of the primary electorate. Yet, Mr Sanders has been successful in putting together a strong campaign, raising larger amounts of funds comparable to the Clinton war chest, and in cornering a significant chunk of the Left, progressive votes.

"This is it. Here I am", Sanders said as he closed an event in Iowa.

Click the "next page" button below for a breakdown of New Hampshire and national polls, as well as a look at the Democratic primary schedule. And topics much more in Clinton's wheelhouse, like foreign policy and health care, weren't addressed as much. That's important because those small donors can each donate more whereas the big donors that Clinton has received are maxed out.

Although Sanders' recent surge in Iowa and New Hampshire is likely to give him a chance in the primary race, Monmouth University Polling Institute director Patrick Murray believes he will have to overcome Clinton in those key demographics to stand a true chance.

Clinton aides cried foul when Sanders recently released a TV ad that highlighted his views on Wall Street reform and suggested - without mentioning her by name - that Clinton is weaker on the issue.

"He just says things that are outrageous, that have no basis in fact", said Sanders. "However, he would still have to overcome Clinton's demographic advantage in the ensuing contests".