There was a Pew Research study published right after the 2012 Presidential election (http://www.pewforum.org/2012/11/07/how-the-faithful-voted-2012-preliminary-exit-poll-analysis/).
Their poll showed that while Catholics were fairly evenly split between Obama (50%) and Romney (48%), the differences between white Catholics and Hispanic Catholics was major. White Catholics supported Romney over Obama 59% to 40%, while Hispanic Catholics supported Obama over Romney 75% to 21%.
Hispanics are recent to America, it doesn’t change the role that the Catholic vote has always played in America, since immigration started in the 1840s and Catholics started moving here.