Senator Bernie Sanders has opened a nine-point lead over fellow Democrat Hillary Clinton among party supporters in New Hampshire, according to an NBC News/Marist Poll released on Sunday.<br />The survey showed that 41 percent of Democratic voters would back Sanders while 32 percent would cast a vote for Clinton if the poll were held today and Vice President Joe Biden were on the ballot.<br />Draft Biden, a group urging him to put his name forward, said the poll showed "a deep desire among Democratic primary voters to have Vice President Biden join the Presidential race."<br />NBC also reported that its polling shows Clinton with a lead in Iowa, another state with an early voice in the nomination process, though her margin over Sanders has shrunk to 11 percentage points from 24 points in July.