In the USA you will get draft back in case a Republican is elected to replace Obama in 2012.
Highly doubtful. For several reasons, but not least of which is that the military does not want it. In fact, pretty much the last thing the military in the US wants is to have to deal with a lot (or in the case of a draft, perhaps even a majority) of people who don't want to be there. Morale suffers, unit cohesion disappears, discipline problems go off the charts.
If Obama were to lose in 12, it would be because he failed to dance with those that brought him - but of course that would also require an opposition who could field a candidate, with a platform consisting of something more than the fact that they don't like the way he throws a baseball, or his choice of jeans, which at this point seems highly dubious. Matter of fact it seem doubtful that the right is going to be able to field a one party ticket in 12, but more likely, a third party run from the right (resulting in a true democratic landslide) seems more possible every day.