When people call into TV contest shows to vote such as American Idol or Dancing with the Stars they are an example of a?

When people call into TV contest shows like American Idol or Dancing with the Stars to vote, they are participating in a form of audience engagement known as "viewer voting." This interactive element allows fans to influence the outcome of the competition, creating a sense of involvement and investment in the show's results. Additionally, it often boosts viewer ratings and enhances the overall entertainment experience.