After the election in November, Obama is going to need to shake up his administration by bringing in some new blood. Apart from replacing Gibbs, who I have always felt was a bad press secretary, Obama might think about changing more substantial positions within his staff. Today's announcement by Chicago mayor Richard Daley that he will not seek reelection, might be a good thing. Would anybody on the left really miss Rahm? Replacing a chief of staff constitutes a major change that can revitalize an administration, and it is something that happens regularly. Bush had two chiefs of staff, and Clinton had two in each of his two terms. Maybe it's time for Rahm to pull the trigger on his long desired mayoral bid.