The polls are open, but relatively few people are expected to vote in Allegheny County where Democrat Rich Fitzgerald and Republican D. Raja are vying to replace Dan Onorato as county executive.
Onorato, a Democrat, decided not to run for a third four-year term after losing the governor's race to Tom Corbett last year.
Fitzgerald and Raja are both successful businessmen. Fitzgerald has been a member of county council since 1999 before resigning to run in this race while Raja served less than a term as commissioner in the upscale Pittsburgh suburb of Mount Lebanon.
The campaign has focused largely on attacks, with Raja blaming Fitzgerald for the county's fiscal ills and Fitzgerald painting Raja as a "job destroyer" -- even though Raja's IT firm employs about 100 people locally -- because some other employees work overseas.