Thursday, June 10, 2010
Valid ballot - What does it mean for IRV?
IRV is sometimes criticized as being too complicated for voters to understand. To prove that this is not a problem, proponents like to point out that the percentages of invalid ballots for IRV elections are usually low, usually between 0% and 1%. So what does it mean to have an invalid ballot in an IRV election?
Strictly speaking, the answer lies in the rules for each locality. However, it is common for a valid IRV ballot to be judged effectively by one rule: there must be no overvote in the first ranking of each race. Let's take a look at some valid and invalid IRV ballots:
Strictly speaking, the answer lies in the rules for each locality. However, it is common for a valid IRV ballot to be judged effectively by one rule: there must be no overvote in the first ranking of each race. Let's take a look at some valid and invalid IRV ballots: