According to Matt Corley:
One school of optimism says that the uninformed errors of individual voters will cancel out through the miracle of aggregation, leading to collective decisions that are rational. Another upbeat suggestion is that uninformed voters can use information shortcuts to make competent voting decisions. University of Michigan political scientist Arthur Lupia, for instance, has found that knowledge of interest group positions can lead poorly informed voters to make similar choices on ballot questions as relatively well-informed voters.
The Dish 