Hillary Clinton has extended her lead in the Democratic presidential race, according to a CNN/ORC poll released Friday.

The poll found 58 percent of Democratic voters or people who lean that way back Clinton while 30 percent said they support Sen. Bernie Sanders, I-Vermont. Former Maryland Gov. Martin O'Malley received 2 percent support.

The latest figures for Clinton indicate a significant jump since the last poll in October when 45 percent of Democratic voters said they would support her for president.

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In the new poll, 74 percent said Clinton had the best chance of winning the general election next November, compared to 17 percent who said the same for Sanders.

Forty-seven percent said Clinton would be the best person to help the middle class while 44 percent said Sanders would be strong on that issue.

The poll, which was conducted after the Paris attacks but before Wednesday's San Bernardino shooting, found 37 percent of all registered voters called foreign policy extremely important and half of voters surveyed said the same about terrorism.

Part of the CNN/ORC poll released on Friday morning found Donald Trump is leading the GOP presidential field with 36 percent support, 20 points ahead of Sen. Ted Cruz, R-Texas, who landed in second place with 16 percent support.

The poll surveyed 1,020 adults between November 27 and December 1, including 930 registered voters and 403 who are Democrats or independents who lean that way. Among Democrats, there was a 5 percentage point margin of error.