Learn Italian: Vogliamo votare per espellere il traditore senza di loro. - We want to vote to expel the traitor without them.

When prepositions like senza, dopo, contro, sotto, and sopra are followed by a personal pronoun, Italian requires you to insert di before the pronoun. Because loro is a personal pronoun, the phrase must be senza di loro.

Why do we use per before espellere?

The preposition per followed by an infinitive expresses purpose, translating to "in order to." Here, they are voting in order to expel the traitor.

Why do we use loro here instead of li?

After prepositions like senza di, you must use the "tonic" or stressed pronoun series (me, te, lui, lei, noi, voi, loro). You cannot use an unstressed direct object pronoun like li after a preposition.

If I wanted to replace il traditore with a pronoun ("him"), how would the sentence change?