PoliticsPa crunches the numbers and finds that Republicans are spending $8.8 million in Pennsylvania in the final week of the campaign, while President Obama is spending $1.6 million.
But that doesn't mean there are six times as many GOP ads. Candidates qualify for discounted ad rates and can pay much less than outside groups for the same space. Most of the Republican money comes from outside groups; Romney himself has spent $930,000.
Republicans are bullish on Pennsylvania, Michigan and Minnesota. Obama advisers have put up ads in all three states but say they're acting out of prudence, not concern.
Quinnipiac stopped polling Pennsylvania a while back. "We haven't bothered with Pennsylvania in these last polls," polling director Maurice Carroll told Slate's David Weigel. "It's in the bag for Obama."