Obama won the Catholic vote in 2012, and 2008, the Catholic Hispanic vote will not go republican in 2016, and if one just figures the odds of voting history, there is no reason to think the republicans will win the Catholic vote in 2016.
If Rubio had been on the ticket with Romney (and he should have been), Romney would have won the overall Catholic vote. If Hillary Clinton is the democrat nominee, I predict this person will be the VP nominee for the Republicans, with probably Ted Cruz heading the ticket.
http://en.wikipedia.org/wiki/Susana_Martinez