Bush2 got 44% of hispanics in 2004.
I think mccain got mid-30s% of hispanics?
Romney got 27% of hispanics in 2012.
I think the GOP has a mandate from minute #1 - Choose a hispanic. It explains why Rubio is already in Iowa. He's running, and letting everyone know early.
And aside from jeb (who already said he'd put rubio on the ticket), who would voters pick? that hispanic gap HAS to be the #1 issue for them.