I think more like 3. The change to the tax rates in 2013 should make a dent. You have to realize that Obama has already cut the deficit by a few hundred billion. He won't eliminate it - that's a huge pipe dream - but it should keep going down, particularly as the US transitions out of Afghanistan and as tax revenue goes up.
Impossible to predict this sort of thing but I think a best guess would put the average deficit at something like 750 billion over the next 4 years.