Don't be certain that Wynne can't be helpful for the ROF, even if the liberals are not re-elected. It's possible that Wynne could do something in the budget or in the run-up to the election that cements the liberal's legacy as being the party that got the Ring going (ironic, isn't it) even if they lose power.
If I was Wynne right now, I'd have an exit plan in place which assures her of becoming well-placed on the Board(s) of a/some prominent mining companies, if she loses the election. I believe that she is probably capable of leveraging her current power status into some sort of post-election position that is ultimately more financially beneficial to her retirement years than another kick at the can as premier.