The victim was identified as Julio Cesar Perez and was a member of the Modern Revolutionary Party.
The incident occurred at about 11h00 local time at the Nuestra Señora del Carmen Polytechnic, in the Simon Bolivar Ensanche, in the National District.
Witnesses to the shooting informed the local press that the killer, who’s name is believed to be Andy, had run away.
The injured were taken to a hospital near the scene. It is believed that a minor was among them.
“The violent incident is still under investigation,” the PME assured in a statement.
Complaints from voters and parties about delays and other irregularities have also marked the first hours of the Dominican Republic elections.
Presidential candidate Luis Abinader and the president of the Modern Revolutionary Party (PRM) Jose Ignacio Paliza in the morning denounced the hacking of their cell phone messaging accounts.
The PRM and Dominican Liberation Party (PLD)’s leaders have also accused each other of buying ballots.