There was something out there yesterday or so from I believe the CDC that said a part of the problem that we aren't talking about is what diseases they are bringing with them from Central America and Mexico as well.
They should get the vote based on religious beliefs and overall values.
Whichever party (ie: Dem/Repub) does the most for the law-breaking, illegal, not-wanted-her, mexicans, will get their vote. They know that, so they have a voice.
If the Right was smart, they'd push for amnesty for all illegal mexicans. They'd get 100% of the mexican vote and secure the WH for the next 50yrs.