I've never understood this "representative view" business. My understanding the logic of PR is that if Sean Kelly gets 155,000 votes and the quota is 150,000 and I vote for him, either my first preference vote is counted in the first 150,000 needed to elect him or if he is already at the quota, my second preference (say Billy Kelleher) is counted in Billy's pile.
But the "representative sample" practice means that my vote is taken into account twice, once for Sean and again (in part) for Billy.
And if Billy never reaches the quota, a vote for him is only taken into account once.