The DCCC and House Majority PAC have set aside $6 million in air time this fall, while the National Republican Congressional Committee has reserved $4.9 million.
In the 30-second video, Coffman speaks directly to the camera, saying he doesn’t much care for his party's nominee.
Costs have steadily risen since the project began, even leading to construction being temporarily shut down in December.
Incumbent Republican Mike Coffman and Democratic challenger Andrew Romanoff are locked in a tight race for Colorado's 6th Congressional District.
Africans make up Colorado's second-largest immigrant group, but until recently, they haven't played much of a role in the state's political life. That's changing now.
The bill extending the nation's debt ceiling passed, but all of Colorado's GOP members voted against it.