JustAngry at Daily Kos quoting The New Yorker:
This is a regular theme with Obama: supporters who disagree with him. The two big Chicago daily papers both endorsed him enthusiastically in the primary, even though they disagreed with him on major issues—his opposition to the war in Iraq and, in the case of the Tribune, his opposition to the North American Free Trade Agreement.
If you can attract your political enemies to your point of view... you win every time. Senator Clinton and John Edwards don't have the natural gifts to accomplish this. None of the other Democratic candidates do.