Most people don't really care about his abortion or gay rights stands, but a comprehensive federal gun control program would not sit well, and I suspect he's not that stupid.
BTW, it would still be interesting to see the viewpoints of all the other candidates.
I suggest you do some reading up on what the BATF has been able to do just be internal rulings - gun parts banned from importation, guns banned by reclassification - etc - all without legislative input. These things have happened under the bush administration. Under one run by rudy, it would be much worse.