I suggest a poll for this thread.

Do you want me to pick from the playable characters, or everybody in the whole game?

Probably Celes. She's had experience with this sort of thing. She only commits suicide if she's the only one left. Since you win as soon as that happens, she couldn't jump of the cliff fast enough. She could find it fast enough through, unless you are using a PSX!

Also, since she's a girl while most of the people in your party are guys, so I don't she'd ever get voted off. Terra might vote for her so she can be alone with Locke, heheheh, but I think you need more votes.