With two major contests in the Democratic nomination race finally approaching, Jonathan Singer takes a look at the latest polling. Singer writes that surveys in Pennsylvania have mixed results. Most show the race close with Hillary ClintonHillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE slightly ahead and another poll by reputable pollster SurveyUSA showing the former First Lady up big. The picture is less murky in North Carolina, where Barack ObamaBarack Hussein ObamaMomentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina Majority of voters say Trump should not nominate a Supreme Court justice: poll MORE has held double-digit leads in recent polls, Singer writes.