Jimmy Carter Says US More Polarized Than During Civil War

“This country has become so polarized that its almost astonishing…. Not only with the red and blue states… President Obama suffers from the most polarized situation in Washington that we have ever seen – even maybe than the time of Abraham Lincoln and the initiation of the war between the states.”

2007: Obama Says He Can Unite U.S. 'More Effectively' Than Clinton - washingtonpost.com

MANCHESTER, N.H., Aug. 14 -- Drawing a sharp contrast with Sen. Hillary Rodham Clinton, his main rival for the Democratic presidential nomination, Sen. Barack Obama said in an interview that he has the capacity she may lack to unify the country and move it out of what he called "ideological gridlock."

"I think it is fair to say that I believe I can bring the country together more effectively than she can," Obama said.