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Study Guides > Mathematics for the Liberal Arts Corequisite

Introduction to Voting Methods

What you’ll learn to do: Determine the winner of a race utilizing various types of voting methods

In many decision making situations, it is necessary to gather the group consensus. This happens when a group of friends decides which movie to watch, when a company decides which product design to manufacture, and when a democratic country elects its leaders. While the basic idea of voting is fairly universal, the method by which those votes are used to determine a winner can vary. Amongst a group of friends, you may decide upon a movie by voting for all the movies you’re willing to watch, with the winner being the one with the greatest approval. A company might eliminate unpopular designs then revote on the remaining. A country might look for the candidate with the most votes. In deciding upon a winner, there is always one main goal: to reflect the preferences of the people in the most fair way possible. We begin by investigating methods for choosing a winner in scenarios with more than two choices.  We also consider whether different voting methods can yield different winners.  

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CC licensed content, Original

  • Learning Objectives and Introduction. Provided by: Lumen Learning License: CC BY: Attribution.