Two Democrats call for delay in Nancy Pelosi vote

After the democrats losses in the 2010 midterm election and the extreme partisanship that both parties displayed during the last session of congress who should the Democrats elect as House minority leader. Some House Democrats are calling for the minority leader to be postponed till December to give challengers a chance to run against former Speaker Nancy Pelosi. What would be the best choice for the Democratic party? What would be in the best interest of the nation?