In Lamoille County, Vermont ... everywhere you look, bursts of Lucy Rogers green, and Zac Mayo red, white and blue. We don't need as much government," Zac said. He's the Republican. She's the Democrat. "I'm pretty centrally focused on healthcare," Lucy said. They're aggressively competing for a state House seat. Both have visited, or plan to visit, every single home in the district all 2,000 plus. The locals say they've never seen anything like it. But this highly competitive race took a dramatic turn recently. During their debate ... the candidates asked for a few extra minutes at the end. They stood up from their tables and began moving the furniture. No one knew what was coming. Indeed, what happened at the local library that night was totally unexpected and unprecedented in modern American politics. Political rivals Lucy Rogers and Zac Mayo shocked voters by coming together for a duet." Because we asked them if we could have a few minutes at the end to play a duet," Lucy said. "It strikes a chord," Zac said. "To say to the world that this is a better way." With that, the Democrat and the Republican united in perfect harmony. There weren't enough tissues to go around. "It marked a turning point for us," one person said. "It gave me a lot of hope," said another. The song they played that night -- and for us after -- is about longing for a less competitive society. Their rendition so resonated with folks in northern Vermont, CBS News actually saw houses that had signs for both candidates -- a clear indication that the winner of this race has already been decided: A landslide victory for civility.