The alt-right hate group The_Donald founded by the Danish white supremacist /u/Viking83, funded by the alt-right troll Palmer Luckey (/u/NimbleRichMan), and promoted by the British neo-nazi Milo Yiannopoulos (/u/yiannopoulos_m), is known for its large number of bots and fake accounts to push posts to the front page.

Reddit's anonymous voting system makes it impossible to tell how many of the votes are fake but an estimate of the number of fake accounts can be made from the number of views of the linked post. Imgur for example shows the number of views for each post.

The comparison below shows that a post with close to the same number of upvotes and the same age on both The_Donald and r/EnoughTrumpSpam will have about 40% of the views from The_Donald while The_Donald has almost 5 times as many "users."

https://i.imgur.com/4oFoIY2.jpg

tl;dr The_Donald has about 40% of actual users compared to /u/EnoughTrumpSpam or approx. 19,000 users = 8% of the total subscribers.