> The highest predictive power was afforded by head orientation (58%), followed by emotional expression (57%). Liberals tended to face the camera more directly,

> The highest predictive power was afforded by head orientation (58%), followed by emotional expression (57%). Liberals tended to face the camera more directly, were more likely to express surprise, and less likely to express disgust. Facial hair and eyewear predicted political orientation with minimal accuracy (51–52%). This is really interesting. I never considered head orientation or expression to be a factor. Then again, it sorta makes sense. Speaking very generally, liberal leaning people on social media probably tend to be more likely to post pictures of themselves in a humorous or "soy face" expression, and conservative-leaning types may try to look strong or aggressive. Also, I automatically assumed features like "handlebar moustache" would mean more likely to be conservative, but it sounds like facial hair wasn't as big a factor.