A trio of companies sell and service more than 90 percent of the machinery on which votes are cast and results tabulated.
The event gave elections officials a chance to brush up on a series of what-ifs before the 2018 midterms.
Russia is likely to meddle in this year's election. That's what intelligence officials told members of Congress Tuesday morning.
The idea is to find strong statistical evidence that the election outcome was the correct one.
Sagauche County had an unusual problem with its election on Tuesday.
About 1.18 million Coloradans cast ballots in 2017. Less than 1 percent of them did that the old school way, marking ballots at polling place.
Some 25,000 Coloradans have registered or re-registered to vote since June.
The original request had been on hold pending a court case. The U.S. District Court in D.C. has denied the motion made by the Electronic Privacy Information Center.
“My job is to follow the law,” Colorado Secretary of State Wayne Williams tells Colorado Matters.