Nobody really knows the number. One million is on the low side, and not everyone hunts deer. There are lots of small game and wild turkey hunters who do not.
According to the US Fish and Wildlife Service, in 2015 the number of paid resident licenses was ~960,000, but the total number of permits, licenses and stamps issued was 2.6 million. That includes about 120K non-residents. It also includes about 130K bow hunters. But we should keep in mind that the RKBA includes bows, crossbows, front loaders and knives, and is not just about what most people think of as guns.
Trump should have commercials specifically targeted at PA that have Illary describing gun-grabbing in her own words. Such video exists. We should also see her repeated, rabid support of the so-called "assault weapons ban," which includes the AR-15, probably the most popular long gun in PA.
Ditto!