The Seinfeld Strategy
In Memoirs of a Geisha (yes, I read it and it was actually a decent read), the protagonist learns to get even with an opponent by watching a sumo wrestler simply step aside and let his foe's momentum do the work.
David Sirota dubs the Democrats' version the Seinfeld Strategy after the sitcom which was, famously, "about nothing."
The idea is to let the momentum from Republican incompetence and corruption take them out of the ring while the Dems just step out of the way and do nothing.
Sirota believes this is a mistake as it leaves the core ideology of the Republicans unchallenged, allowing them to simply replace their leadership and be resurrected:
In making such a limited critique, Democrats tacitly validate conservativesÃ¢â‚¬â„¢ ideological goals and further reinforce the public feeling that Democrats have no convictions of their own. For example, despite the GOP scandals and the political opportunities they present, Democrats refuse to push serious reforms like public financing of elections and instead push half-measures and focus on Republican missteps.
In the process, they are implicitly saying they believe the system that most Americans know is corrupt is actually perfectly acceptable. The same thing on Iraq: The Democratic Party refuses to take a position wholly different from the Republicans, simply saying the management of the warÃ¢â‚¬â€rather than the war itselfÃ¢â‚¬â€is the problem.