The country’s only opposition political party, which is part of the Muslim Brotherhood, won just six of the 110 seats being contested, compared with the 17 it won in 2003.
The IAF fielded 22 candidates, but it was only successful in Ajlun, Amman, Balqa, Jerash and Kerak.
In Amman, where support for the movement is traditionally strongest, the IAF won two seats.
An IAF statement says: “Vote rigging increased either through flagrant vote buying or inserting large amounts of voting cards in ballot boxes in Amman’s fourth, fifth and sixth districts and in Aqaba, Ruseifa, Jerash, Ajloun, Zarqa and others.”
King Abdullah II will appoint a new government and a new second chamber of parliament in the next few days.