I don't think that necessarily answered his question though, because I was wondering the same thing. It says a user must get 75% of a vote on his eligibility, but it doesn't say how many voters are required.
If there are 100 ORG posters, you'd need 75 of them on your side.
But if only 10 of them vote, you'd need 8. So, does everyone in ORG have to vote before you get in?