Lesson Two: Run-Off Election

In Lesson One we saw the commonly used method of plurality. Are there reasons we might not be satisfied with this method?

For one thing, a plurality is not necessarily a majority. We might imagine a situation with a large number of alternative choices where the winner might not get even 10% of the votes! Many of our political elections have only two candidates (or at least only two with a chance of winning). With only two choices a plurality is necessarily a majority. However, there are also many instances with many candidates, including primary elections, electing members to the Baseball Hall of Fame, ranking football teams, and so on. 

Also, plurality uses only first place votes, and neglects the rest of each person's list of preferences.

Let's look at the example from Lesson One again.