For voters in two states, elections are not a choice between two candidates. They list them in the order of preference - first choice, second choice and third choice.
Alaska used this rank-choice voting system earlier this year when it elected its first Democratic member of the house since 1972.
Alaska and Maine are the only states to use the system for their federal elections but some would like that to change.
Proponents argue that the system promotes more moderate candidates and could help turn back political polarization. Detractors say the benefits are overblown and the system can confuse voters.
Guests:
Ned Foley, professor of election and constitutional law at Ohio State University's Moritz College of Law
Nathan Atkinson, assistant professor at the University of Wisconsin Law School
Deb Otis, director of research at FairVote