[1][2] Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates.
Powers of the presidency include signing treaties and other agreements with foreign countries and international organizations, with Supreme Leader's approval; administering national planning, budget, and state employment affairs, as decreed by the Supreme Leader.
[11] Candidates have to be vetted by the Guardian Council, a twelve-member body consisting of six clerics (selected by Iran's Supreme Leader), and six lawyers (proposed by the head of Iran's judicial system and voted in by the Parliament).
This interpretation is in contrast with the idea of "notification supervision" (Persian: نظارت استطلاعی) which does not imply the mentioned approval right.
[14] The "evidentiary supervision" (Persian: نظارت استنادی), which requires evidences for acceptance or rejection of elections legality and candidates competency, is another interpretation of mentioned article.