John Bercow should block a third vote on Theresa May’s Brexit deal

Not for the first time the Speaker of the House of Commons appears to hold the Brexit process in his hands. There has been speculation this week that John Bercow has the power to prevent a third vote on Theresa May’s deal by resorting to a parliamentary convention which prevents a motion being debated in the Commons if it is substantially unchanged from a motion already brought before the House during the same session of parliament. Given that a third vote on May’s deal – likely to be called on Tuesday – would be essentially the same motion as was defeated by 149 votes last Tuesday (and not all that much different from the one defeated by 230 votes in January) there would appear to be a good case for Bercow to act.