From NBC(channel)4.com: WASHINGTON -- The city's interim attorney general will look into why an unusually high number of write-in votes were briefly tallied in Tuesday's primary, D.C. Mayor Adrian Fenty said.

In a statement Wednesday, elections board spokesman Daniel Murphy attributed the problem to a defective cartridge from a ballot machine that duplicated vote totals in multiple races. The error was quickly caught and the results revised, he said.

The board is investigating how the error occurred.

Huuummm - wonder who makes that machine, and who is practicing for what?