The council, which oversees elections, approved conservative victories in 19 of 30 Tehran seats on 1 April, after reformist candidates asked for a recount. The winners of the remaining 11 Tehran seats will be decided in a run-off poll on 25 April.
Reformist ex-president Mohammad Khatami and the head of the reformist National Confidence Party, Mehdi Karroubi, had asked the council for a recount of votes in Tehran.
“The validity of the eighth parliamentary elections in another 36 districts has been confirmed,” said Abbas Ali Kadkhodaei, spokesman for the Guardian Council.
The council has confirmed the election results in about 130 out of Iran’s 200 electoral districts so far.