News Corp Australia is pitching its special coverage of the Indigenous Voice to parliament as an “educational series” that will “empower our readers” and explain the causes of disadvantage, according to leaked material outlining how much the company’s mastheads will charge for advertising.

But the language in the presentation is directly at odds with the published views of its highest-profile commentators, who have described the Voice as “not good news for Australia” and “a massive power grab”.