CNN

(CNN) – A lawsuit was filed late last week against Mike Coffman, Colorado’s Republican Secretary of State alleging that thousands of voters were purged from the battleground state’s rolls in violation of federal law.

Click here to read the complaint against Coffman

“Legitimate voters should have their voices heard,” Jenny Flanagan, the Executive Director of Colorado Common Cause, said in a statement. “By returning wrongfully purged voters to the list we can ensure their rights are protected,” she added.

Coffman’s office has denied any wrongdoing, and Coffman says he believes Colorado has fully complied with all applicable voter registration laws and voter cancellation procedures.

CNN currently considers Colorado to be a toss-up on its Electoral College map.

–CNN Correspondent Dan Simon contributed to this report