By Shaun Boyd

DENVER (CBS4) – Immigration and education have dominated the governor’s race in Colorado.

But one ad is focused entirely on gun control, and its reference to Columbine deserves a Reality Check.

Political Specialist Shaun Boyd breaks down the claims in the ad.

Click here to see all of CBS4 Political Specialist Shaun Boyd’s Reality Check reports.

Boyd’s sources for this Reality Check are as follows:

Shaun Boyd is CBS4’s political specialist. She’s a veteran reporter with more than 25 years of experience. Follow her on Twitter @cbs4shaun.