The Colorado Future Fund, a super PAC fueled by a controversial donor to GOP Colorado Rep. Scott Tipton's campaign, today filed notice that it had made an expenditure against Tipton's Democratic opponent, Sal Pace.

As reported previously by Sunlight, the Colorado Future Fund, which is run by a law clerk in a Colorado law firm headed by Tipton's campaign lawyer, reported one $25,000 contribution in August from Houston-based SG Business Services, Ltd. The company, which operates leases on land in Tipton's district, has been a flashpoint in Tipton's campaign. Until now, the Colorado Future ...