Twitter demographics

I noticed something interesting a few weeks after I got a Twitter account.

(For the uninitiated, Twitter works like this: You pick a handle [I'm cinderkeys], create a brief, searchable profile, then write posts describing what you're doing in 140 characters or less. It's possible to view the posts of everyone on Twitter, but to make it more manageable and fun, you can choose specific users whose updates you want to follow.)

Based on my own interests, I've been following Tucson music fans, music reviewers, and people with invisible illnesses like ME/CFS, fibromyalgia, and lupus. Though I have definite political leanings, however, it's never occurred to me to follow people because of their political affiliations.

And? Of all the political tweets I've seen from the 70+ people I'm following, all have been pro-Obama. There's not a McCain supporter in the bunch.

Without meaning to, I've hit a demographic. I guess it makes sense in the case of the invisible illness crowd. If no one wants to insure you, and you're possibly too sick to work and get insurance through an employer, then you're going to root for the guy who has any interest at all in health care.

That doesn't explain the music fans, though.

So ... Why are you voting for who you're voting for?