It's harder to do with a ranked ballot rather than at a traditional convention. With the ranked ballot one has to do the rankings before seeing the results of the most recent round. Momentum is not a factor in a ranked ballot. In a convention, even with a secret ballot, it's easier for a candidate to deliver his delegates to another candidate. The drama of gathering a group of supporters, marching down to another camp and publicly endorsing a candidate is lost with the ranked ballot. I'm supporting Bernier as first choice, but I won't follow the dictates of the Bernier camp for subsequent rankings. As a delegate to a convention, I'd be involved in the floor action and discussion and would be more likely to follow the group consensus as I'd be part of the group.