(CNN) - Restore Our Future, a super PAC supportive of Mitt Romney, raised $14.8 million in September, according to its monthly filing with the Federal Election Commission.
The group spent $4.6 million and ended the month with $16.6 million cash in the bank for the final month of 2012 presidential race.
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September's cash haul was way up from the previous month, when the group took in $7 million but spent $21.2 million.
The monthly report includes totals before the presidential debates began in early October. Charlie Spies, the group's founder, told CNN's Erin Burnett that their biggest fund-raising day came the day after Romney's widely-praised performance in the first debate on October 3.
In recent weeks, the group has focused its efforts in states in the Upper Midwest, particularly Wisconsin and Michigan.
- CNN Senior Producer Kevin Bohn contributed to this report.