It helps elect the strongest candidate.

Today the candidate supported by the largest minority often wins, or at least makes the runoff if there is one. Under Approval Voting, by contrast, the candidate with the greatest overall support will generally win. In particular, ‘Condorcet’ candidates, who can defeat every other candidate in separate pairwise contests, almost invariably win under Approval Voting, whereas under plurality voting they often lose because they split the vote with one or more other centrist candidates.