Liberal users com­prise a larg­er per­cent­age of these r/politics users, while con­ser­v­a­tives will com­prise a small­er per­cent­age. Through those users and through their vot­ing, they can con­trol what is seen and what is not seen. So a lib­er­al user, as a block, will down­vote more often than not some­thing they don’t agree with nec­es­sar­i­ly.