I don't know the exact amount 31 Karma and I believe it takes 4 people to flag a submission. If a user has 31 Karma they can also Vouch for a submission. [1]

I don't know the exact amount 31 Karma and I believe it takes 4 people to flag a submission. If a user has 31 Karma they can also Vouch for a submission. [1] It can then get re-flagged. [1] - https://github.com/minimaxir/hacker-news-undocumented#flaggingvouching https://github.com/minimaxir/hacker-news-undocumented#flaggi...