Tell students they are going to be choosing their class president. Discuss the duties of a class president as necessary. Have them get into groups and choice a candidate for their group. Everyone in the class will vote by secret ballot, but not for their own candidate. Students will then conduct a campaign, trying to get votes for their candidate.
This is good practice in the language and art of persuading as well as team work. The passive voice structure is also used a great deal as in “My candidate was voted most likely to succeed in high school.”