Unfortunately, there is not a single group leading the charge in Illinois. ConcealCarry.org is going out of business in a few days, and its founder has decided that he has had enough. ISRA (Illinois State Rifle Association) has done exactly ZERO on this issue. The NRA has provided a bill, but there is only one sponsor in the senate and house. I called the senator's office -- his staff told me that the bill is dead in committee and that no one is pushing the bill.
The biggest obstacle to right-to-carry in Illinois is the ISRA. ISRA is simply a target shooting club run exclusively by Richard Pearson, and refuses to do anything pro-active in Illinois. The only way a right-to-carry law will be passed in Illinois is if a new organization springs up to carry the torch.
People in Missouri should remember that carrying in Illinois is a FELONY (courtesy of our former "Republican" Governor, George Ryan).