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DENVER — More than 21,000 ballots cast in Colorado in the presidential election were rejected, according to the Secretary of State’s Office.

One of those ballots belonged to the secretary of state’s daughter. Her ballot was rejected at first because it did not match the signature on file.

A spokeswoman for the office said that when Wayne Williams’ daughter signed her voter registration as an 18-year-old, she had a very neat signature, but after some years in college, it looks very different.

The vast majority of rejected ballots — more than 16,200 — were rejected because the signature on the ballot did not match the signature on file.

About 2,600 people didn’t sign their ballots and nearly 2,600 others didn’t provide the required identification.

When a ballot is rejected, the voter gets a letter explaining the issue and has a certain amount of time to respond to clear things up so the ballot can be counted.

The 21,000 ballots could not have changed the outcome in the election in Colorado.

Hillary Clinton received 1,338,870 votes in Colorado and Donald Trump received 1,202,484, according to the Secretary of State’s Office.