The next presidential election is due to be held in 2016. Under the constitution, Mr Aquino will not be permitted to stand for re-election, although it is possible that his supporters in Congress will attempt to revise the charter before then to allow the president to serve again. Elections will be held in May 2013 for one-half of the seats in the Senate and the entire lower house. The congressional elections will provide Mr Aquino and the LP with an opportunity to strengthen their position in the legislature.