The claims in a commercial on WNEG-TV that liberals watch tennis and conservatives watch golf piqued my interest. So I found an article discussing it. Sports Viewers Largely Republican has a decidedly different focus. Liberals watch more TV while Conservatives watch more sports.
The top 5 sports I watch are the English Premiership, the UEFA Champions League, MLS, college football, and college soccer. Only MLS and college football are on the list. Each are diametrically in opposition to the other.
There may be a simpler way to measure an individual’s personal leaning. A Slate article, Escape From The Echo Chamber, has a nifty tool which will look at your web browser history, the skew of those sites, and guess.