Retrieved on March 14, 2016 at 6:59:55 PM CT
Civitas Institute / Survey of Democratic Primary Voters/ March 20-23, 2015
Url: http://www.nccivitas.org/wp-content/uploads/2015/03/dem-primary-xtabs-3.25.15.pdf
Retrieved on March 14, 2016 at 6:59:55 PM CT
Url: http://www.nccivitas.org/wp-content/uploads/2015/03/dem-primary-xtabs-3.25.15.pdf