Here's an interesting takedown of a gun poll that appeared on MSNBC. Scroll to the end, especially the part about the Hispanic women segment. The critic, who points out some issues with the poll, misses an even better criticism. In a survey of 1,000 folks in Texas, exactly how many are likely to be Hispanic women? The margin of error of such a small number explodes and, to be honest, the results become useless. You have to oversample if you want to break results down by ethnicity or race, otherwise you simply have far too few people to make meaningful comparisons.
My own political preferences aside, there's a lot to question in this poll.