New polls show Barack ObamaBarack Hussein ObamaJuan Williams: Buttigieg already making history Obama condemns attacks in Sri Lanka as 'an attack on humanity' Trump hits Romney for Mueller criticism MORE virtually tied in Virginia and North Carolina with John McCainJohn Sidney McCain10 factors making Russia election interference the most enduring scandal of the Obama era Earth Day founder's daughter: Most Republican leaders believe in climate change in private Trump gives nod to vulnerable GOP Sen. McSally with bill signing MORE, whose ultimate success will depend on the many voters who have yet to form a strong opinion of him, writes Jonathan Singer. Obama's appeal among white voters, which is stronger than that of the last two Democratic presidential nominees, would translate into a decisive victory when combined with his strength among black and Hispanic voters, writes Singer.