Parliamentary Voting System and Constituencies Bill

I wish to make a very brief contribution on a specific technical matter regarding the counting of the votes under the alternative vote system. That procedure is outlined in subsection (2), under which the candidate with the fewest votes at any stage is eliminated and his or her next preferences are redistributed. I am not clear from my reading of the Bill what the situation would be if two or more candidates were tied in last place with an equal number of votes. Would both candidates be eliminated and their votes redistributed or would some form of lot be held to determine which dropped out and had their votes eliminated first?