You might be thinking of Colorado where they somehow failed to notice that a truck with a bunch of ballots to be sent to voters wasn't unloaded at the post offi

You might be thinking of Colorado where they somehow failed to notice that a truck with a bunch of ballots to be sent to voters wasn't unloaded at the post office until people started complaining that they didn't get a ballot. This is quite different from losing voted ballots or not recording a vote correctly.