Is it permissible for a printing press owner to print election advertisements for different political parties?

If the programs of political parties contravene the Sharia, then it is not permissible to assist in printing their propaganda or promoting their candidates; for that entails aiding in sin and aggression. Allah Almighty says: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression). And whoever fears Allah, He will provide for him, suffice him, and enrich him.