First, ask students what issue(s) they care about. Climate change? Immigration? Healthcare? Criminal justice? You’ll get a wide range of responses.
Then ask: what would they like to see happen to improve the status quo on those issues?
Then, ask how that change happens. It most likely will take an act of the state legislature or U.S. Congress. Help them draw the conclusion that how we elect representatives impacts any issue they care about.
(Day 2’s lesson, Why does gerrymandering matter?, has a rich discussion activity on this.)