There is enough dislike between the front runners (and more importantly, their supporters) to prevent any of the leading contestants from winning. This is particularly true of the Dion, Rae and Ignatieff camps.
The Liberal Party has a policy of alternating between French and English leaders. However... there is too much dislike for Dion, especially from the Rae and Ignatieff camps.
Dion will stay strong through the first two ballots.
There is one candidate, if he survives the first two rounds of voting, who will come up the middle and win.
Look for support to shift on a third or fourth ballot to the only Ontario candidate with deep Quebec support that the Rae and Ignatieff camps could move to in an attempt to stop Dion.
Ken Dryden.
Dryden performed well in his ministerial assignments under Martin and hasn't rocked the boat.
More importantly, Cretien (who could speak neither official language well) has already demonstrated that being a strong public speaker isn't important.