http://www.fivethirtyeight.com/2009/05/hispanics-back-gay-marriage-at-same.htmlThere is a somewhat persistent conservative myth that Hispanic voters are vehemently opposed to gay marriage. Although a majority of Hispanics are probably are opposed to gay marriage -- as most (though no longer all) surveys suggest are a majority of Americans in general -- Hispanics appear to be no more opposed to gay marriage than are whites.
The following table contains data on all 2009 surveys I could find that break out support for gay marriage among Hispanic respondents. This includes one national survey, one California survey, and three New York Surveys. In addition, I include two prominent surveys from 2008: the exit poll from California's November 4 vote on Proposition 8, and the General Social Survey, which was conducted throughout last year. Next to each survey, I indicate the number of Hispanics in the sample (estimated values are marked with an asterisk) and the attendant margin of error; I then average the results from all eight polls, weighed based on their number of Hispanics in the sample.

The Prop 8 exit poll reported that 47 percent of Hispanics voted 'no' on Proposition 8 (indicating their support for gay marriage) as opposed to 51 percent of whites; the difference is not statistically significant given the sample size. Each of the other surveys indicate that Hispanics support gay marriage at almost exactly the same rates as non-Hispanic whites, except for a recent Quinnipiac national poll, which actually has them supporting gay marriage at significantly higher rate than whites.
If we aggregate the eight polls and weight by sample size, we find essentially no difference in support for gay marriage between Hispanic and white voters. (Please note that the 47 percent figure you see should not be read to mean that this is the number of Hispanics who support gay marriage nationwide, since the average includes a disproportionate number of respondents from New York and California, two very liberal states -- the relative support for gay marriage is all we're examining here).....