No
Bush received a decent sized 9/11 bounce in NJ, which is over and done with as far as the GOP is concerned.
Jersey is known for polling quite a bit more GOP than they actually vote.
Giuliani would make it closer than the others, but his views on Iraq (and its very unlikely it won't be a major issue in 08) will hurt him.
This is true. A lot of polls in 2004 showed the state nearly tied between Bush and Kerry and ended up going to Kerry by seven. Some polls also showed Tom Kean tied or even ahead of Bob Menendez in 2006 and Menendez won by nine points.