 That constitution delineates mechanisms for amending it, but it also declares eight articles immutable and unalterable and not subject to change, which include a guarantee of a republican form of government, and an explicit prohibition against presidential candidacy of anyone who has been president previously at any time or for any reason.The constitution also provides for an independent organ to supervise and implement elections, the Superior Electoral Tribunal.Another organ similarly independent of the three main branches of government a Special Court for Resolution of Conflicts Between Branches of Government.