What industry did politicians use to spread information about their own party and opponents

The mass media industry is used by the politicians to spread information.

Mass media industry is a industries that use different medias that reach a large amount of people through mass communication. As the information will be spread quickly and most likely effectively, they are used to spread their political stance, the glory of their own parties.

For example, they would use slogans on posters and on radios to reach the audiences. Television and the social media is also used to spread their words and gain people's support by increasing exposure.

Sometimes it is also used to damage the opponent's reputation, for example social media would expose the mistakes in the past made by the opponents.

All in all mass media industry was used due to its influence to people.

Hope it helps!

The common sense pamphlet i think