Sentence:  The Istiqlal was still firmly united in 1957 , but the <WSD>P.D.I.</WSD> ( Parti Democratique de l'Independance ) , the most important minor party at the time , objected to the Istiqlal 's predominance in the civil service and influence in Radio Maroc . 
Meaning of the word marked with <WSD> tags:  any number of entities (members) considered as a unit