There is nearly a 40% gap between Hispanics who self-identify as Democrats and Hispanics who identify as Republicans. Many of the Hispanics who identify as Republicans are Cubans who fled communism in the 1960's, and upper-class Peurto Ricans who came to the United States in the early 1960's to escape the radicalization of the Caribbean basin. Most of the rest are Hispanics who were already in the United States in the 1950's.
This is why your picture from the perspective of Arizona is skewed. AZ is the state where Hispanics are most "friendly" to Republicans. Many of them have been here a long time. It is still abysmal. The gap in typical elections there is at least 10 points, usually more. Even when they vote for "Republicans" they prefer non-Republican Republicans, like Juan McCain.
Party identification of Mexicans is almost 100% Democratic among those in the US 30 years or less. That means that illegals nationalized under Simpson-Mazzoli are an absolute lock voting block, just like Blacks. We can expect those nationalized in the next wave of Amnesty to be similarly disposed.
Nationwide, Hispanics break over 2-1 against Republicans. 33 points is monolithic whether you care to acknowledge it or not. In means in any election, no matter where, no matter when, and no matter what the issues, that Democrats can count on the votes of Hispanics to be a net positive of it least 30 points. Yes, that is monolithic; and even the slanted stats from Pew acknowledge that.
It makes no sense for Americans who believe in individual freedom and personal responsibility to welcome newcomers who vote against those ideals in those numbers. Furthermore, one of our parties needs to be a party that furthers the interests of America. Not the interests of this or that group, but of the Country. Any party that caters to Blacks, or Latinos, or Chinese, or Whites, is a party I want no part of. Republican outreach to Hispanics as Hispanics is shortsighted and immoral. It will only further Balkanize the Country, only more firmly entrench the abominable racial spoils system we already have, and create a new, expanded and more virulent generation of race hustlers. We already see evidence of this in La Raza, and any number of nationalist Mexican groups.
Either Mexicans should be coming here to be Americans NOT Hispanic-Americans, or Mexican-Americans, or we should be sending them home.