If Obama were president, he would have somewhat of a Democratic majority in Congress that may allow him to sort of do what he wants - but not to the extent that Bush was able to in his first term. There's just not that kind of a lopsided difference.
More importantly, if Obama were elected, membership numbers for groups like GOA and
NRA would rise dramatically as people who had simply never bothered to join finally signed up. They could probably clear a 10% increase from early November to inauguration, particularly with people getting memberships and guns for Christmas. More members means more lobbying power. That doesn't even take into account increases in owned guns and CWP permits, which surely would go up significantly. Look around at the folks here - how many do you think would redouble their efforts in getting their friends to get a permit or a firearm, for no other reason than to poke a stick in Obama's eye?
We will be ok as long as we stick together and keep pushing for our rights no matter who is in office.