Edwards and Obama

  The big news today is the "what now" after John Edwards endorsed Barack Obama.

  Edwards, a former presidential candidate, made the announcement last night during a rally in Michigan with Obama. His endorsement was heavily courted by both Obama and chief rival, Hillary Clinton.

  Edwards brings a lot of support from white, Southern lower-income voters, the very people Obama has had the hardest time winning over. And it is those very voters that favor Clinton.