I believe there were two edits from the time /r/the_donald became popular, the first was a more general edit as you say, but the second if I recall correctly was all about keeping the /r/the_donald from the top. Though it seemed to have backfired because after the second edit I saw more of them on /r/all not less.
The reason pretty much all posts in the_donald are upvoted by users is due to the fact Clintons Correct the record was downvoting the_donald posts in hordes.
Again if Reddit would not have aligned themselves with one candidate named Clinton they probably wouldn't have this problem now.
