To be invited to the debate, a candidate had to achieve an average of at least 1% in three recognized national polls released between August 1 and October 10. In addition, a candidate had to either file a statement of candidacy with the Federal Election Commission or declare that one would be filed by October 14, the day after the debate. The latter criterion would have accommodated Vice President Joe Biden had he decided to enter the presidential race as late as the day of the debate. CNN had an extra lectern available to install for Biden, but he took no action to enter the campaign before the debate. The aftermath of the debate, the CNN poll showed Sanders as the clear winner. However, the next day CNN said Clinton was the clear winner despite not showing any polls to back it up causing criticism of bias in favor of Clinton.
Democratic Debate : Bernie Sanders - Hillary Clinton
To be invited to the debate, a candidate had to achieve an average of at least 1% in three recognized national polls released between August 1 and October 10. In addition, a candidate had to either file a statement of candidacy with the Federal Election Commission or declare that one would be filed by October 14, the day after the debate. The latter criterion would have accommodated Vice President Joe Biden had he decided to enter the presidential race as late as the day of the debate. CNN had an extra lectern available to install for Biden, but he took no action to enter the campaign before the debate. The aftermath of the debate, the CNN poll showed Sanders as the clear winner. However, the next day CNN said Clinton was the clear winner despite not showing any polls to back it up causing criticism of bias in favor of Clinton.