I'd assume some of these people are dependent on decisions of others. Like I doubt Gillibrand will run if Hillary does. Maybe the same is true of Rubio and Jeb Bush. Wondering if all the New York Dems and Florida Repubilcans means we'd see bipartisan repeal of the ban on same state tickets.
I don't know about Florida, but my guess is that Gillibrand doesn't run if either Clinton or Cuomo runs. Which means that I don't think Gillibrand is very likely to run.
What is Christie's route to a 2016 presidential campaign? Does he run for reelection and risk a loss, or just retire from the governorship after one term like Romney, sparing himself the need to box himself in politically, as he may have to to position himself for the New Jersey general electorate?
A short time ago, I would have agreed with you that Christie was more likely to run than Rubio, but I'm starting to think it's the other way around. Especially since Rubio is far more likely to be the 2012 VP nominee, which would set him up as the 2016 frontrunner. Of course, I'm also more down on Bush's chances of running than you are, so that further inflates my suspicion that Rubio may run.