I have a silly question that I hope my readers will help me answer. I've lived in the United States since 2003 but there are still things that surprise me. One of those things is: how do the political organizations know about my poltical convictions? For a while now I have been receiving letters from the Democratic National Committee, letters asking for support for President Obama and various Democratic politicians. I never get similar letters from Republicans asking for any kind of support. Since I'm not a citizen, I obviously have not registered as a Democrat or anything like that.
So how do they know to send these letters to me? And how do the Republicans know not to?
Does anybody know how this works?