Campbell v. Colorado

The issue this case presented for the Colorado Supreme Court’s review centered on whether a trial court abused its discretion in permitting a police officer to testify regarding the results of a Horizontal Gaze Nystagmus (“HGN”) test without first qualifying that officer as an expert witness under CRE 702 and Venalonzo v. Colorado, 388 P.3d 868 (2017). After review, the Supreme Court concluded that, on the facts of this case, the officer’s testimony concerning the HGN test was expert testimony under CRE 702 and that the district court therefore erred in holding otherwise. However, the Court concluded that on the facts presented here, the court’s error in admitting the testimony was harmless. View "Campbell v. Colorado" on Justia Law