Question: Commercial Speech. A mayoral election is about to be held in a large U.S. city. One of the candidates is Luis Delgado, and his campaign supporters wish to post campaign signs on lampposts and utility posts throughout the city. A city ordinance, however, prohibits the posting of any signs on public property. Delgado's supporters contend that the city ordinance is unconstitutional because it violates their rights to free speech. What factors might a court consider in determining the constitutionality of this ordinance?