Mechanisms in place to prevent double voting in Colorado

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DENVER -- The Donald Trump vote-rigging accusation train rolled through Colorado last weekend.

"When you send your ballot in, do you think it’s properly counted?" Trump told a crowd gathered in Greeley.

Trump went onto say something more interesting, encouraging supporters who had already voted to vote again.

"They’ll give you a ballot, a new ballot. They’ll void your old ballot and give you a new ballot. And you can go out and make sure it gets in,” Trump said.

Is this true? Partially.

According to the secretary of state, if you mail in your ballot but it hasn't been received by the clerk because of postal delays or otherwise, you can go to a voting center and cast a vote.

However, once your mail-in ballot is processed and scanned, it would be thrown out because an irregularity would be detected.

"You're not supposed to vote twice so you might wind up with an investigation after," Secretary of State Wayne Williams said.

In regards to Trump's pessimism regarding the accuracy of mailed-in ballots, Williams, a Republican, said Trump should be more optimistic.

"In Colorado, we are very confident about the procedures that we have," Williams said, citing bipartisan counting teams and 24-hour surveillance.