Ethnography ideas

I've had two main ideas for my ethnography: Texas Aggie Conservatives and Cepheid Variable. After a discussion spurred by a passing comment, a Cepheid Variable member suggested studying his group; they would likely be far more willing to be observed than the Conservatives. I am unfamiliar with both groups. Cepheid Variable has a wide variety of members and could provide very interesting subjects for an ethnography. Because I am politically moderate (leaning towards slightly liberal), it would be a very different and interesting experience to observe the Texas Aggie Conservatives (people on the more extreme end of the political spectrum).