Clinton's support among Democratic and Democratic-leaning voters has ticked up 9 points since mid-September, based on the latest NBC News/Survey Monkey online poll

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Former Maryland Gov. Martin O'Malley and Harvard Professor Lawrence Lessig took 1 percent apiece in the online poll released Friday.

The survey, conducted on Tuesday and Wednesday, comes on the heels of Vice President Biden's decision last week to not run for the White House in 2016.

Clinton saw a 4-point uptick in the poll after the first Democratic debate Oct. 13.

She got another 5-point bounce after Biden said he wouldn't run, two candidates dropped out and she appeared before the House panel investigating Benghazi.

Clinton is the overwhelming choice for those surveyed who are 30 or older. Sanders has a 15-point edge, 48 percent to 33 percent, among voters aged 18-29.

The former secretary of State also maintains a lead over the self-proclaimed democratic socialist among men, women, whites, blacks, Hispanics and those with a range of educational background.