Clinton's Email Scandal Sinking Presidential Bid?

There are new signs of trouble today for Hillary Clinton's Democratic presidential bid.

The latest NBC-Marist poll shows Sen. Bernie Sanders, I-Vt., is now leading Clinton by 41 to 32 percent, expanding his existing lead in the New Hampshire primary.

Clinton's ongoing email scandal has taken a toll. That's one factor sending her New Hampshire poll numbers plunging almost 20 points since July.

Her numbers have dropped in Iowa too, but she still holds an 11 point lead over Sanders there.

Meanwhile, the same poll shows GOP candidate Donald Trump now beating Clinton in Iowa in a hypothical head-to-head race for president.

Tump holds a commanding lead in the Republican races in Iowa and New Hampshire.

On the Republican side, non-elected officials, including Trump, retired neurosurgeon Ben Carson and former Hewlett Packard CEO Carly Fiorina, have a combined 45 percent of support in New Hampshire, and 56 percent support in Iowa.