I'm sympathetic to the general point Atrios is making here, but I don't think it's right to say that "For some the 2006 election win was premature as the Democrats won without massively repositioning themselves, proving it was possible." The Democrats did, after all, reposition themselves pretty dramatically on the highest-profile political issue of the day: Iraq. They just repositioned themselves to the left and started offering a commitment to end the war rather than 2004-vintage promises to prosecute it more vigorously.