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Money fuels campaigns — especially big ones. Fundraising reports ahead of Tennessee’s Aug. 6 primary due Wednesday give the public a peek at how candidates are raising and spending donor dollars.

On paper, Republican gubernatorial candidates U.S. Sen. Marsha Blackburn, favored by polling, and U.S. Rep. John Rose, the self-proclaimed underdog, look about even. Both disclosed big-league money for a statewide race that has already seen its share of TV advertising, an expensive but effective way to buy time in front of voters.