Dude, when you poll "Americans," you poll a random sample of the population, which makes you just as likely to get one kind of person as you are to get another. Do you think you're getting any sort of random sample here, or do you think you're getting 1) Dolphins fans, who 2) want to see Ryan Tannehill succeed? Come on already.We are polling Americans, who have the right to choose one party or another. Just like how I polled dolphins fans who can choose what they feel is most wrong with the team. Again, by your logic, gallup polls are worthless and don't provide insight.... which couldn't be further from the truth.
By your logic, gallup polls should include non Americans because, you know, who better would know what's happening in this country than someone who lives outside the country. Great logic.
/insert meaningless smiley face here
Here:
http://en.wikipedia.org/wiki/Simple_random_sample