The group supporting independent candidates in Colorado and across the country is also facing campaign finance complaints.
Young people also didn't make any significant strides, even as unaffiliated voters cast a record amount of ballots.
The group was aiming to elect unaffiliated candidates to the state legislature. None of the complaints are on pace to be resolved before next week’s election.
The impact five unaffiliated candidates could have in the Colorado legislature could be minimal, however.
An election law attorney had filed the complaint against Unite America with the Secretary of State's office two weeks ago.
The office of Colorado Secretary of State Wayne Williams has 10 days to determine if the complaint is valid.
The advocacy group is close to landing five candidates on the November ballot, one for the State Senate and the rest for the State House.
As for how many voters incorrectly sent back both ballots, the amount was comparable to other open primary states.
Up to 7 percent of unaffiliated voters are returning both the Republican and Democratic ballots.
Most experts agree Colorado’s current congressional map doesn’t advantage a single party. Advocates want to keep it that way.