Newsweek poll: Hillary won the debate with 56%; Bernie 33.
Note: this was an online poll, a "non-probability survey," but not self-selected. The methodology is described below.
We are still waiting for a poll from one of the major traditional pollsters like Opinion Research Corporation or Gallup.
http://www.newsweek.com/poll-hillary-clinton-won-first-democratic-presidential-candidate-debate-384032
More than half of Democrats believe Hillary Clinton won the first Democratic presidential candidate debate, according to the results of a new poll released by NBC News and SurveyMonkey on Friday morning.
Clinton finished at the top of the list with 56 percent polled saying she did the best in the debate; Bernie Sanders came in second with 33 percent. Martin O’Malley and Lincoln Chafee each received 1 percent of the vote, and less than 1 percent of those polled chose Jim Webb.
Though Clinton received the best results in the poll, social media on Tuesday evening pointed to Sanders as the winner of the debate. According to a social analytics report reviewed by Newsweek earlier this week, Sanders won the debate on Twitter; he was referenced in 13 percent of tweets with the hashtags #CNNDebate and #DemDebate, compared with 9 percent referencing Clinton.
http://www.nbcnews.com/politics/2016-election/nbc-online-poll-clinton-wins-debate-reenergizes-core-backers-n445546
In last month's NBC News/SurveyMonkey poll we saw the erosion of a number of key Democratic voting groups from Hillary Clinton to Bernie Sanders and Joe Biden. The voting public is notoriously fickle at this time in the campaign season, with more than three months to the first caucus or primary. With the caveat that these subgroups have smaller sample sizes, and therefore tend to have more volatility, a number of important voting groups - men, whites, blacks, college graduates, and those over 65 are back in Clinton's camp.
However, Bernie Sanders has picked up considerable steam among young voters, capturing the support of 54% of those under the age of 30 compared to Clinton's 26%. Among Hispanics, Sanders has more than doubled his level of support, to 33%. He also continues to gain traction among those with a high school degree or less, although Clinton is still outperforming him by 18 points. Fortunately for Clinton, these groups do not tend to turn out in primary elections as strongly as the groups from where she draws her strength.
SNIP
The NBC News Online Poll was conducted online by SurveyMonkey from October 13-15, 2015 among a national sample of 4,898 adults aged 18 and over. Respondents for this non-probability survey were selected from the nearly three million people who take surveys on the SurveyMonkey platform each day. Results have an error estimate of plus or minus 2.0 percentage points. A full description of our methodology and the poll can be found here.
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Hm, I wonder how the other 76% decided who "won" the debate? 
