In the east, governments have collapsed in chaos. In the west, the tide of settlement has turned. Towns are dying faster than mayflies in June. With bandits, rogues, and scavenging bands picking off the weak, only those towns that enjoy the protection of a powerful sheriff can survive. No longer simple lawmen, sheriffs hold their territory with a six-gun in one hand and magic in the other.
Sheriffs are more like feudal kings than public servants.
I highly suggest you pick up a copy.