People who don't vote generally don't have strong opinions, or don't care at all, or haven't really thought about the issues. Why do we think representing the "meh, whatever" component of the population will help?
Stronger: If you don't care enough to learn about what the issues are and where people stand on them, I'm not sure that I want you to vote. In fact, I think I want you not to. You're going to vote either for a label, or for whoever had the most ads. Neither is a good basis for choosing who to vote for.
Those who do not vote generally skew towards certain groups and classes. These groups are not specifically any less knowledgable than the groups that do vote. This adds a skew to the results in favour of the groups that vote.
