Then suddenly you get the call from Washington. You know it'll mean Secret Service, and speechwriters, and minders vetting your wardrobe. But nobody said it would mean a mainstream network comedy host doing statutory rape gags about your 14-year old daughter. You've got a special-needs kid and a son in Iraq and a daughter who's given you your first grandchild in less than ideal circumstances. That would be enough for most of us. But the special-needs kid and the daughter and most everyone else you love are a national joke, and the PC enforcers are entirely cool with it.
National office will dwindle down to the unhealthily singleminded (Clinton, Obama), the timeserving emirs of Incumbistan (Biden, McCain) and dynastic heirs (Bush). Our loss.
Update: Link fixed.