Mercer County's Roberta Biros notes a weakness on Kathy Dahlkemper's part -- she lost 27% of the Democratic vote Tuesday to the rather bizarre campaign run by the unknown Mel Marin. (Our congressional returns map of the 3rd District is here.)

I interviewed Roberta in my story on the six GOP candidates up there in the northwest, and here's part of her postmortem on that race from PaWaterCooler:

In the end, the grassroots candidates were unable to compete with the big money in the race. Paul Huber and Mike Kelly fought out the race with their bank accounts, and a winner was selected. The top vote getter in the race was Mike Kelly of Butler County. It had been suggested by many that Mr. Kelly was in the pocket of Republican Party insiders, and that was illustrated on Tuesday night. Mr. Kelly was the top vote getter in the final tally of the District in the field of six great candidates.