Salty is completely wrong about this.CO didn't just cobble this together in the past few mos to deal with covid. As gg's link told is, it's been an 8 year process of refinement & adjustments.
Law was signed by Hickenlooper May 2013.
Was fully implemented with time to spare for the Nov. 2014 election. Ask Cory Gardner how it worked for him in 2014.
There's nothing mysterious or difficult about this. Every state could have this 100% installed/fixed/operational by next November.
The only difficult part is this. How to get the rat forking, voter fearing, Banana Republicans to stop blocking the obviously right and easy thing to do. I don't have an answer for that.