(CNN) - Republican Rob Portman out raised Democrat Lee Fisher by a more than two-to-one margin the past three months in the battle for Ohio's open Senate seat.
Portman's campaign announced early Thursday that it brought in $2.65 million in the second quarter of this year. Hours later, the Fisher campaign announced it raised more than $1 million dollars during the same three month period.
The Portman campaign also says it has $8.8 million cash on hand, far more than the over $1 million the Fisher campaign says it has in the bank.
Fisher, the state's lieutenant governor, defeated Ohio Secretary of State Jennifer Brunner in a competitive primary. Fisher beat Brunner by 11 points, but had to spend a good amount of his campaign cash leading up to the May 4 primary. Vice President Joe Biden traveled to Ohio on June 30 to help fundraise for Fisher.
Portman, a former congressman and Bush administration budget director, faced token opposition in the GOP primary.
Polls indicate the race is deadlocked. Both candidates are fighting to succeed two-term Republican Sen. George Voinovich, who is not running for re-election.
"Because of your outpouring of support, our campaign is in a strong position as we head into the last 100 days of this campaign," says Portman, in a campaign statement. "With what we think is a record 16,000 plus individual contributors at this point in the campaign, you've shown everyone the depth and strength of our support."
"Ohio voters are clearly troubled by Congressman Portman's 20 years in Washington supporting tax breaks for exporting Ohio jobs," responds Fisher spokesperson John Collins, in a statement. "Lee will have the resources he needs to make the choice clear – between Congressman Portman's 20 years in Washington and Lee's work to create jobs in Ohio."
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