Is this accurate, traditionalist? I don't care to pay five bucks to get the stupid study. If it is true, it's the smoking gun (har, har) of bias in the study, because those states have both rural and urban populations.
No. He breaks down the results by state, and Florida, Pennsylvania, and Michigan are included. The results for these states are not qualitatively different from the whole sample.
You don't need to pay to see the study. It's available for free at the NBER.
Florida kept stats on CCW holders and license revokation:
Since adopting CCW (1987), Florida's homicide rate has fallen 21% while the U.S. rate has risen 12%. From start-up 10/1/87 - 2/28/94 (over 6 years) Florida issued 204,108 permits; only 17 (0.008%) were revoked because permittees later committed crimes (not necessarily violent) in which guns were present (not necessarily used).(from Kentucky Coalition to Carry Concealed
I read the same stats from other sources. The reason Florida stopped bothering to keep stats after 1994 was because there were too few offenses to keep track of.