You must have blocked /r/t_d. I would trust that there would be little argument that, by number of subs, and subscriber count, Reddit leans pretty-heavily left. However, by front page posts, the site APPEARED to lean heavily right in the run-up to the last presidential election. Week after week, I was blown away that the admins didn't nerf the algorithm to "fix" it.
They did eventually nerf the algorithm. /r/t_d was abusing stickied mod posts to get on the front page and that got fixed. I think it was also partly because most of the pro-trump users and posts were concentrated in one subreddit causing inflated upvote counts.
/r/t_d also took advantage of the void left after the DNC primaries ended since the site was very anti-Hillary at the time.
