I think that's a reasonable assumption based on Hispanics I know (I live in Cali.) But you apparently assume that only legal citizen Hispanics vote. Wrong! Why do you think the Rats are so opposed to voter ID? They have sophisticated methods of getting illegals to the polls.
I live in Southern California and the majority of legal Mexican immigrants, by an overwhelming margin, disapprove of illegal aliens first and foremost because the legal immigrants got their citizenship the hard way and do not approve of the illegals coming in and lowering the “bar”, as in taking all of the low paying jobs at a severe discount thus eliminating the available jobs for low skill legal immigrants.
Just my observation in San Diego, but depending upon where you live most likely matters most on the outcome of such a “poll”.