Montgomery County is canceling 16,000 incorrectly printed mail ballots for the municipal general election in November it sent to voters and is in the process of issuing new ones, writes Thomas Fitzgerald for The Philadelphia Inquirer.

According to county officials, the incorrectly printed mail ballots are easy to identify as they were printed on only one side. The company that printed the ballots, NPC, said that the back page of the ballot was left blank due to a programming error.

“This does not meet the standard we have come to expect from NPC,” said Dori Sawyer, director of elections for the county. “Upon notification of the error, we began working with the Department of State, taking the proper steps to cancel the incorrect ballots and issue replacements.”

The new ballots will be sent out this week. Voters who receive a one-sided ballot are asked to destroy it along with the return envelope and the envelope it came in.

In the November 2 general election, residents will vote for justice of the state Supreme Court and a judge on the appellate Superior Court, as well as two judges on the Commonwealth Court.

Read more about the issue of the incorrectly printed mail ballots in The Philadelphia Inquirer.