Nobody can use any "title" in an election in Argentina. The rule goes for religious personalities and for professionals in general: nobody can use the title of Doctor, Journalist or Chiropractor. Since there are many Jewish politicians in the city of Buenos Aires, this episode should not be considered a case of antisemitism.
Iranian parliamentary panel gives conditional nod to nuke deal (Reuters)
from the article: Argentina court rules title of 'rabbi' cannot appear on ballot list