Summary: why should we undermine this trust with false and fake concerns? Well, it is clear that such a thing [rigging] will not be allowed because there is strict supervision. One of the greatest blessings of the existence of the Guardian Council {1} is that its members are vigilant about mistakes and they do not allow any wrongdoing to be committed in this regard. The same is true of other organizations.
The Islamic Republic is a democratic system in the true sense of the word. Of course, the enemy constantly speaks against our elections. The Americans and their propaganda agents constantly speak against our elections in different ways.
The people trust the Islamic Republic. When there is an election, they enter the arena and vote. So why should we undermine this trust with false and fake concerns?
Well, it is clear that such a thing [rigging] will not be allowed because there is strict supervision. One of the greatest blessings of the existence of the Guardian Council {1} is that its members are vigilant about mistakes and they do not allow any wrongdoing to be committed in this regard. The same is true of other organizations. In the recent years, we sometimes received certain reports saying that there have been certain problems in elections, but whenever we issued an order asking for investigation; it became clear that this was not the case. Of course, sometimes it is possible that a wrongdoing is committed in a corner of the country, but it does not affect the results of elections in any way. Such small wrongdoings are not important and elections have been healthy in all terms.
Footnote:
1) The Guardian Council of the Constitution is an appointed and constitutionally-mandated 12-member council that wields considerable power and influence in the Islamic Republic of Iran.
Source:Remarks Leader
http://english.khamenei.ir/news/2136/Strong-economy-developing-science-and-revolutionary-spirit