Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE has a nearly 20 percent edge in voter support over Sen. Bernie Sanders Bernie SandersMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters Why Democrats must confront extreme left wing incitement to violence MORE (I-Vt.) in the 2016 Democratic presidential primary, according to an NBC News/Survey Monkey poll released early Tuesday.

Clinton remains the party’s front-runner less than a month before the first votes are cast in Iowa.

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She takes 52 percent voter support, followed by Sanders’s 37 percent. Former Gov. Martin O’Malley ranks a distant third, with 2 percent.

About 8 percent do not know which Democratic contender they will back. Another 1 percent have no answer.

Tuesday’s results show that Democrats are relatively adamant about the candidate they are supporting in their party’s primary.

About 51 percent say they are “absolutely certain,” while another 31 percent state there is a “large chance” they have their contender.

Approximately 15 percent are 50-50, pollsters discovered, while 3 percent said there is a “small chance” they are decided and 1 percent have no answer.

NBC News and Survey Monkey surveyed 2,619 registered Democratic voters from Jan. 4 to 10, with a 2.4 percent margin of error.

Clinton leads Sanders by roughly 13 percent nationwide, according to the latest RealClearPolitics average of polls. He remains competitive with a 4.3 percent lead in New Hampshire, according to an index of Granite State polls.