What about people who don't care for any sports? I presume they're fairly Democratic, being disproportionately female and/or counter-cultural.
Agree with that but there are females that are sports fans and have been few athletes that were part of counter-cultural/feminist movement such as Bill Walton and Billie Jean King. I would think they are more of socialist/green then Dems but I would put Democrats in second with far-right such as Alex Jones nutjobs in third for those that don't care about sports.
More socialist/green than average, sure, but those groups are so small that it's very unlikely they make up a plurality. There's possibly an ultra-religious component, too.
I wonder what percentage of Americans fall into this category. The larger the percentage, the more likely it is be reflective of general preferences. FWIW, I'm a non-sports fan (albeit non-American), but I follow politics as if it were a sport.
Most American athletes don't give about politics and if they do it's because of "god", taxes, gay marriage, and other stuff that makes them mostly vote Republican. There is this movie called "Not just a game" that will share story about athletes politics, mostly from the left since David Zirin is progressive learning.
http://youtu.be/-Jp09hFJZXI And I see politics as somewhat like sports but I see everything from music to art as politics.