Poll: Clinton clear winner of second debate
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Democratic front-runner Hillary ClintonHillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE easily won the second Democratic presidential debate, according to a poll published late Saturday.

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Sixty seven percent of Democratic primary voters said Clinton won the debate, Public Policy Polling (PPP) found in its survey, conducted for the pro-Clinton super-PAC Correct The Record. Twenty percent thought Sen. Bernie SandersBernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I- Vt.) won the debate, PPP added, while 7 percent picked former Maryland Gov. Martin O’Malley as the winner.

Sixty three percent of viewers also said they had a more positive opinion of Clinton after the debate, according to PPP. Forty one percent said the debate gave them a more positive opinion of Sanders and 37 percent said they now have a more positive opinion of O’Malley.

The left-leaning polling firm found that Clinton is the clear favorite of Democrats when it comes to national security, a key focus in Saturday night’s debate, with 75 percent of respondents saying she’s the strongest candidate on that topic. Seventeen percent said the same about Sanders while 5 percent chose O’Malley.

PPP’s poll of 510 Democratic primary voters has a 4.3 percent margin of error.

--This report was updated at 9:09 a.m.