Stalemate is apparent with advent Of Guan constituency
It has been the standard practice for every deliberative, decision making or parliamentary body to have its membership stand at an odd number. This is to avoid a situation where a body is equally divided on different sides of a decision or a motion.
In jurisdictions where an even-numbered decision-making body is practiced, there is a system in place to break the tie. Such ties are broken by allowing an ex officio member to cast a vote, like in the case of the Senate of the United States where the Vice President of the country is given voting right as an ex officio. Another method that is used for breaking a tie is by giving the Speaker or chairperson an original vote, and in some cases casting vote (second vote). The British House of Commons exemplified that. Such votes are not exercised capriciously or whimsically, the exercising of casting vote is governed by the Dennison's rule in the case of the House of Commons in the UK and the Roberts' rule in the United States' jurisdiction.