Hillary ClintonHillary Rodham Clinton100 days to go in volatile race Trump: I wish Ivanka and Chelsea Clinton weren't friends Poll: Clinton up by 6 nationally MORE widened her lead over rival Sen. Bernie SandersBernie Sanders100 days to go in volatile race What does Bill think of Hillary's Chris Wallace interview? Dem anxiety hangs over Clinton MORE (I-Vt.) to 17 points in a national poll released one day before ballots are cast on Super Tuesday.
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.