Poll: Clinton widens lead over Sanders nationally
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Hillary ClintonHillary Diane Rodham ClintonClinton takes swipe at 'false equivalency' in media coverage of 2016 election Former presidents, first ladies come together to honor Barbara Bush Romney: Parts of Comey book read 'too much like a novel’ MORE widened her lead over rival Sen. Bernie SandersBernard (Bernie) SandersSanders ally pushes Dems on cutting superdelegates Sanders: ‘Trump's agenda is dead’ if Democrats win back majority Hannity snaps back at 'Crybaby' Todd: 'Only conservatives have to disclose relationships?' MORE (I-Vt.) to 17 points in a national poll released one day before ballots are cast on Super Tuesday.

Clinton now has 55 percent support among Democratic voters, according to Monday morning's CNN/ORC International poll, compared to Sanders’s 38 percent.

Clinton’s lead over Sanders was 14 points, 52 to 38 percent, in a similar poll in late January.

The former secretary of State holds a much slimmer 7.5-point lead over Sanders in a RealClearPolitics average of national polls, 49 to 41.5 percent.

CNN/ORC conducted its latest poll of 418 Democratic-leaning voters via cell and landline telephone interviews from Feb. 24 to 27. It has a 5 percent margin of error.

Monday's poll also showed that voters are slightly more enthusiastic about Sanders than Clinton.

About 74 percent would back Sanders as the Democratic nominee, with 41 percent "definitely" supporting him and 33 percent "probably" supporting him.

Roughly 65 percent would rally around Clinton, meanwhile, with 36 percent "definitely" supporting her and 29 percent "probably" supporting her.

Clinton notched a huge win over Sanders during last Saturday's Democratic primary in South Carolina. The former first lady won by a 48-point margin, 74 to 26 percent.