Table of contents |
2 An example 3 Potential for Tactical voting 4 External Link |
Procedures
Each voter rank-orders all of the candidates on their ballot. If at any time one candidate is ranked first (among non-eliminated candidates) by an absolute majority of the voters, then this is the winner. As long as this is not the case, the candidate which is ranked last (again among non-eliminated candidates) by the most (or a plurality of) voters is eliminated.
An example
Imagine an election to choose the capital of Tennessee, a state in the United States that is over 500 miles east-to-west, and only 110 miles north-to-south. Let's say the candidates for the capital are Memphis (on the far west end), Nashville (in the center), Chattanooga (129 miles southeast of Nashville), and Knoxville (on the far east side, 114 miles northeast of Chattanooga). Here's the population breakdown by metro area (surrounding county):
Group A: 42% of voters (close to Memphis) 1. Memphis 2. Nashville 3. Chattanooga 4. Knoxville |
Group B: 26% of voters (close to Nashville) 1. Nashville 2. Chattanooga 3. Knoxville 4. Memphis |
Group C: 15% of voters (close to Chattanooga) 1. Chattanooga 2. Knoxville 3. Nashville 4. Memphis |
Group D: 17% of voters (close to Knoxville) 1. Knoxville 2. Chattanooga 3. Nashville 4. Memphis |
Assuming all of the voters vote sincerely (strategic voting is discussed below), the results would be as follows, by percentage:
City | Round 1 | Round 2 | ||
---|---|---|---|---|
First | Last | First | Last | |
Memphis | 42 | 58 | ||
Nashville | 26 | 0 | ||
Chattanooga | 15 | 0 | 15 | |
Knoxville | 17 | 42 | 17 |