Arizona... 2004: 12% 2008: 16% 2012: 18% 2016 Guess: 21%
Colorado... 2004: 8% 2008: 13% 2012: 14% 2016 Guess: 16%
Nevada... 2004: 10% 2008: 15% 2012: 19% 2016 Guess: 25%
New Mexico... 2004: 32% 2008: 41% 2012: 37% 2016 Guess: 42%
Texas... 2004: 20% 2008: 20% 2012: ?? 2016 Guess: 22%
Florida... 2004: 15% 2008: 14% 2012: 17% 2016 Guess: 19%
California... 2004: 21% 2008: 18% 2012: 22% 2016 Guess: 23%
Did I cover all the major Hispanic states?
Mostly yeah but I think New Jersey and New York would count too if we're interpreting "more pronounced" as states with electorates that have proportionally more Hispanics than the national average: http://en.wikipedia.org/wiki/List_of_U.S._states_by_Hispanic_and_Latino_population#By_2010_census_results
I could do those but they both are not competitive, then again California isn't either.