Updated from an 8/15/post: September 4, 2020 Remember that old joke about Chicago? Vote early and vote often? That is illegal in many states. If you try that in Colorado, only your in-person ballot will be counted; your mail-in vote will not be counted.. The President has just urged voters to vote twice, by mail and in-person in order to test the system. https://www.reuters.com/…/trump-says-people-in-north-caroli…In some states, that is illegal. It is in North Carolina. The question is if these wilful lawbreakers try it is not that they can vote twice, it is will their vote be counted twice. In Colorado, if you vote by mail and then show up to vote again in person, you can do it, but the mail-in vote will not be counted. If there is a gap in the timing between the time the mail-in ballot is received and not yet marked off in the information the polling judge receives it, it will be caught. However, in Colorado that has had mail-in voting where every registered voter gets a ballot in the mail since 2013, in-person voting on election day has dwindled to 3-4% percentage because mail-in voting is so convenient even before COVID. Thanks to the miracle of computerized voter registration and the ability to check off quickly if a person already voted, that is the essential question. Besides, those who are concerned their mail-in vote did not make it in time or there is some hanky panky, they can trace their mail-in ballot online just as they can also trace the status of their UPS shipment. and nearly all states have this service. Trump, as usual, is displaying his ignorance or hoping voters are ignorant so he can manipulate them by spreading ignorance. .The second backup is the ability in Colorado to compare signatures at the time the voter registered vs the signatures at the time the ballot is cast either at a polling place or by mail and if there is a question, a bi-partisan group will make the judgment call.
I served as an election commissioner in Denver for over 7 years as part of my duty as Clerk and Recorder..1983-91. We used the old New York lever machines that left a paper trail and in every step of the process, both a Democrat and a Republican double-checked each other. Computers were a new thing then, but we rejected them because they could have been easily hacked.,.thinking that maybe someday they would be more secure. They are not in 2020, at least in tallying the vote. I am satisfied that having signatures checked by both D and R officials, running election registration against Social Security data files to discover who is still alive, is as reassuring as you can get. They do that in Colorado. That Russians were able to hack into election systems in all 50 states in 2016 is troubling...but having actual mail-in ballots in hand for scrutiny after the elections is as foolproof as you can get. There will always be crooked fools who try, but if the system set up as it has been for years in Colorado leaves an evidence trail in actual ballots, then that is the best evidence there is if an election result is challenged. That is the best deterrent to election fraud there is. https://www.5280.com/…/no-fraud-isnt-rampant-in-colorados-…/ Why? Systems are in place, per this article.
https://www.denverpost.com/…/colorado-denver-mail-votin…/For Colorado deadlines, registration, ID requirements, vote by mail or dropoff; https://www.sos.state.co.us/pu…/elections/electionInfo.html…. Early in person voting in Colorado begins October 19. www.sos.state.co.us/pubs/elections/main.html "Review your voter record to make sure your information is up to date. October 9 - Counties will begin mailing ballots for the November 3 rd General Election. October 26 - deadline to register to vote or update your registration and still receive a ballot in the mail. In Colorado, you can register to vote and vote in person up to 7 PM on Election Day.https://www.pewresearch.org/fact-tank/2020/08/26/biden-supporters-in-states-where-it-is-hardest-to-vote-by-mail-are-most-concerned-about-voting-this-fall/ft_2020-08-26_votebymail_04a/