Oklahoma has seen its share of close races. In 2006, state Rep. Todd Thomsen, R-Ada, won his House seat by two votes, but only after four ineligible votes were thrown out. Last year, a special House election in Tulsa was tossed after irregularities made it impossible to determine the true winner; the apparent margin of victory was a single vote.
Those races show the importance of every legitimate vote. That voter fraud isn't widespread is reassuring. But that's no reason to end efforts to weed it out completely.