Smith, in a campaign-finance report filed Monday, said that he had $7 million in the bank as of Sept. 30. He reported raising $1.6 million from July 1 to Sept. 30.
That puts Casey at a disadvantage. Casey on Monday reported having $5.2 million in the bank as of Sept. 30. He raised $1.5 million from July 1 to Sept. 30.
Smith spent more than $2 for every $1 that Casey's campaign put into his bid for a second six-year term.
From July 1 to Sept. 30, Smith spent $6.8 million while Casey spent $2.5 million.
The result has been obvious to anyone who owns a television. Smith, little known when he entered the primary, has been running campaign commercials at a rate that Casey can't match.
The polling in the Senate race has become a little chaotic, with three weeks to go until the Nov. 6 election.
Public Policy Polling, in a survey released Monday, said that Casey holds an 11-point lead over Smith, 50-39 percent.
An Allentown Morning Call/Muhlenberg University Poll released Monday showed a much narrower race, with Casey over Smith 41-39 percent.
The Inquirer, in a poll released last week, had Casey leading Smith 48-38 percent.
Contact Chris Brennan at email@example.com or 215-854-5973. Follow him on Twitter @ChrisBrennanDN. Read his blog at phillyclout.com.