This lab will demonstrate how different voting schemes can elect different candidates. You will compute the winners of a fictional election under the following five voting schemes:

- Plurality method
- Plurality with runoff
- Sequential runoff
- Borda count
- Condorcet method

Once you have mastered these concepts, you will enter your own preference schedule and determine the winner using the methods listed above.

The second part of this lab will cover weighted voting systems. You will learn how to calculate the Banzhaf power index and determine which weighted voting systems are "fair".

**Labs.**

Part 1. The Mathematics of Voting.

Part 2. The Mathematics of Power and Sharing.

- Weighted Voting Systems

- Examples of Weighted Voting Systems

- Create Your Own Example of Weighted Voting System

*
Last modified: 26 April 2006
*