Sort:  

I don't know - maybe posts from accounts with negative rep are not censored if they hit trending..

but how come he gets so many upvotes but rep is not improving? he is negative for months now.

I read that @dan set his rep to be minus 18 somehow (maybe with massive downvotes).. It will take a lot of upvotes to correct that!

okay, is there any page i can read about the beef between @dan and bernie?

You can just search through the steem blockchain around the time period of this post:
https://steemit.com/steemit/@berniesanders/6g6eag-berniesanders-signing-off

This is @berniesanders signing off! :D