NMA - Tea Party Express derails GOP candidates

A Tea Party insurgency has left rancor and discord within the GOP's big tent. Led by Sarah Palin, Tea Party candidates have scored several primary upsets against establishment candidates.

The latest victor is Christine O'Donnell. The anti-masturbation candidate has won the Republican senate nomination in Delaware, causing strategist Karl Rove to self-immolate on national television.

The Democrats, believing the Tea Party cannot win in a general election, are predictably happy with Tea Party's primary success. But are the Democrat's underestimating the strength of this populist movement?