So here is the dilemma for Johnson and his team.
The point is that he could instruct a proportion of his foot soldiers to vote for Jeremy Hunt and see off Gove.
But if Johnson's vote does not rise in the fifth and final round, and especially if it falls, everyone will know that he has gerrymandered, which would taint him.
In a way, it would have been infinitely cleverer to lend votes to Hunt in the previous round, if he were so inclined, because the rigging would have been harder to detect.
"What to do, what to do?" as he may well be asking...