There is a long history of black Democratic candidates doing worse than pre-election polling would suggest. Two recent studies disagree on whether this problem is still with us.
Inevitably, some voters will cast votes against Barack Obama because he is black. But research suggests he has options for reducing prejudiced voting in November.
Harvard professor Samantha Power believes the U.S. can and should reclaim its ability to be a positive force in the world in terms of promoting human rights.
Candidate's victory speech at the conclusion of the 2008 Iowa Democratic caucus has political scientists comparing it to ones delivered by icons of oratory from years past.