Quinnipiac University conducted a survey of 743 Ohio registered voters between Jan 22 and Feb 1, 2015. Respondents were contacted by either Cellphone or Landline and instructed by a live operator. The results of this poll were released on Feb 4, 2015.
Results were provided for the only publicly acknowledged question.
Question 1b | PreferenceView Matchup
(If Registered Democrat) If the Democratic primary for President were being held today, and the candidates were Joe Biden, Hillary Clinton, Martin O'Malley,
Bernie Sanders, Elizabeth Warren, and Jim Webb, for whom would you vote?
This question was presented to 315 registered voters from Ohio who were contacted in some undisclosed fashion. The margin of sampling error is ± 5.5%.
The question wording was provided by Quinnipiac University.