Kalev brought this video to my attention:
I find this video remarkable candid. Clark admits that when she was a politician, she voted against — and campaigned against — the Single Transferrable Vote (BC-STV) in the last referendum because the old system — First-Past-The-Post — served her interests as a politician, not because it served the voters’ interests. She’s gotten out of politics and she’s now coming out for BC-STV as better for the interests of the average voter — watch the video and listen to her reasons why.
You can also see a transcript of Ms. Clark’s words here.