I think the most glaring example of the principle involved here is NYC during the Dinkins years. People were afraid to even go into the city and then they elected Rooty. In a matter of a few short years it completely turned around.
If Obama wins the whole US will look like Detroit in 4 years.
I don't know how Detroit made the list, they are in the 20th straight year of a renaissance, change you can believe in forever.