But if you re-edit it to make significant changes, people are more likely to accept the repost and take a second look at it.Agreed what @sykochica was saying.. Just reposting the same post again and again doesn't look good.
If you just constantly re-post same material, it gets frowned upon. People who deliberately bypassed something once (for whatever reason) don't want to see the same thing pop up again, and again, and again.. in the feeds. If I saw that, I'd even consider to downvote / flag the person... so there is a tender sweet spot to avoid getting flagged for "repost spam" :)