As long as the polling place isn’t in a school you can legally conceal carry when voting in Colorado. We can carry more places than most states. I know you can’t carry in a poling place in Louisiana.
I work as an election judge (not in the two counties mentioned) and have my CHP. I know all the exits, distances, and how far the main entrance into the voting room is from my desk. None of my coworkers know though they do know I have a CHP
Other than sheriff department beefing up patrols around voting centers, we have not had any specific active shooter training or discussion in my training classes. Could come up in training today but I doubt it