Here's a briliant article on the NYRB describing the struggle for the democratic leadership in the US.
This is an introduction:
Who will be the Democrats' nominee for president, and how will that choice affect the center of gravity? The three leading contenders—Hillary Clinton, John Edwards, and Barack Obama—are making starkly different pitches to voters, based on quite different assumptions about what the party needs to do to break its stalemate. The next year and a half—in which we'll see if the Democrats make a success of their congressional majority and who captures the presidential nomination—will be the most consequential eighteen months the party has faced in some time.