The inability of the Democrats to make rules and stick to them provides the Republicans for their best long-term hope that their time in the political wilderness will be shorter than it might otherwise be.
Discipline and Democrats are, evidently, not words with an affinity. It has explained why the GOP, even with its problems, has been able to stymie the Democrats on most issues.
Can there be any doubt that the GOP, if it had a congressional majority and a Democratic president as unpopular as Bush, would be running roughshod over them?
One of Obama's challenges, should he become president, will be bringing some discipline to his own party. This will likely be difficult because electoral success will tend to blind the Democrats to the problem. The fact that it's hard, does not make it any less important however.