Here is the deal:
So long as Jeb Bush is the GOP nominee, Hillary Clinton's path to 272 becomes a lot harder because he will win Florida, Nevada, and North Carolina. Ohio, Virginia, New Mexico, Colorado, and Iowa would be up for grabs.
With Marco Rubio, it's the same thing.
With Scott Walker, Florida, Nevada, and New Mexico come back into her column. Virginia and Colorado are leaning her way, though up for grabs. North Carolina is 50/50, then Ohio and Iowa lean Walker.
Rand Paul would give her a run for her money in Colorado and New Hampshire, but she might even be able to win a state like Georgia or Missouri.
Without Bush, Walker, or Rubio, Georgia leans Republican, but it's still up for grabs. Same thing with North Carolina, Indiana, Missouri, and Montana.
Why 272 as opposed to 270 first of all?
Next there is nothing at all suggesting Jeb will do particularly well in Nevada, and Florida is almost guaranteed to be very very close. New Mexico will not be competitive regardless of the GOP candidate either.