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 Clinton2020 Democrats make play for veterans' votes The Memo: Democrats confront prospect of long primary Manafort sought to hurt Clinton 2016 campaign efforts in key states: NYT 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 ObamaThe Memo: Democrats confront prospect of long primary George Conway: 'If Barack Obama had done this' Republicans would be 'out for blood' George Conway to take part in MSNBC impeachment hearing coverage MORE has held double-digit leads in recent polls, Singer writes.