The thing I don't understand is why the mayor was so anxious for Linden to be taken off the scene until after the election. If he didn't have anything to do with Rosie's murder, why did he want her investigation derailed so badly---he even went so far as to offer a bribe to Linden's Lt.
For that matter, why did one of Richmond's aides (Jaime or Gwen) even have a city hall pass in the first place? And why was there a room at city hall filled with Richmond signs?
(I'll bet that there aren't any rooms at the White House filled with pro-Romney signs...)