There are 2 kinds of states: Those with heavy organized crime corruption in government, and those that recognize the rights of the citizens.

Not a lot of Mafia influence in PA, except for Philadelphia. Guess which city is always trying to infringe gun rights?

NY, NJ. . . . famous for their massive organized crime families.

Until Heller, which jurisdiction had no gun rights at all? Washington DC. Do the math.

It's not a coincidence. Look at the crime families that California sends to Congress. Look at NJ sending Menendez back to Congress AFTER he was convicted of taking bribes, which was set aside on a technicality (sure, he took the money and gifts, but the statute was a little vague about what kinds of graft were really bad).