WON'T GO THERE  —  In the thick of a campaign it is easy to overrate the importance of an endorsement or a political hit.  But it is difficult to overstate the significance of John Lewis' switch from the Clinton to Obama camps because it is a devastating blow on two or three levels wrapped together in a single person.

Clinton Camp May Regret Largely Turning Its Back on Caucus States  —  Among the costliest decisions Hillary Rodham Clinton's presidential campaign has made this year was to largely cede caucus states to Barack Obama.  It is one that, in retrospect, baffles Democratic strategists and, even more so, the operatives on Obama's team.

HALPERIN'S TAKE: Why a John Lewis' Defection Would Be Such a Big Deal  —  Lewis is a universally respected, historic figure who is the first prominent Democrat to go from squarely in Clinton's camp to Obama's.  The rationale he seemed to give to the New York Times strikes at the heart …

White men hold superdelegate power balance  —  In an ironic twist to the historic Democratic nominating contest between an African American and a woman, the balance of power may be held by a more familiar face: the white male.  —  According to a Politico analysis, close to half …