Paraguay MPs reject amendment allowing president re-election
President Horacio Cartes eventually said he would not seek another term even if the amendment was approved.
Memories of a military government that held on to power for over three decades are still fresh in Paraguay.
Under the 1992 constitution, introduced after the dictatorship, a head of state may only serve a single five-year term.
Paraguay was controlled by military ruler General Alfredo Stroessner, who seized power in a coup, from 1954 until 1989.
President Cartes' term is due to end in 2018.