It gives minority candidates their proper due.

Minority candidates will not suffer under Approval Voting. Their supporters will not be torn away simply because there is another candidate who, though less appealing to them, is generally considered a stronger contender. Because Approval Voting allows these supporters to vote for both candidates, they will not be tempted to desert the one who is weak in the polls as under plurality voting. So, minority candidates tend to receive votes which reflect their true level of support.