Complex sentence: Molly runs the household and sees an opportunity on election day to energize her father: frustrated with her father's apathy toward voting, she sneaks into her local polling place and tries to vote on behalf of Bud.
Split into simpler sentences: Molly runs the household and sees an opportunity on election day to energize her father. Molly, frustrated with her father's apathy toward voting, sneaks into her local polling place and tries to vote on behalf of Bud.