Incumbent Democrat Bob Casey headed into the final months of Pennsylvania's U.S. Senate race with almost three times as much cash to spend as his Republican challenger, Tom Smith.
Casey's campaign reported a little over $6.2 million by Sunday's deadline. Smith's campaign reported almost $2.3 million, most of it his own money.
Casey, the former state auditor general and treasurer from Scranton, is seeking re-election to a second, six-year term.
Smith won a five-way Republican primary on April 24 for the right to challenge Casey. The Armstrong County resident made a small fortune after starting a coal company, and is using it to help bankroll his campaign.
Smith reported spending more than $5.6 million so far, most of it on TV ads in the primary.
The general election is Nov. 6.
