Regardless of the outcome in Florida, Rudi is pretty much toast. That all but cedes NY, NJ, and CT to McCain. He is also running strong in AZ, MO, IL, and NM. He is going to be alive with plenty of delegates after Feb 5.
If Romney wins tomorrow in Florida, this race is transformed dramatically in the states that you cite. Conservatives will coalesce further around Romney; he is gaining strength in the mid-Atlantic, including NJ.
That said, if McCain wins tomorrow, he will have sealed the nomination.