(Portland, OR) -- The Multnomah County Elections Office is working to fix a mistake where the wrong ballots were sent to 92-hundred voters in East County. Their ballots were intended for voters outside of the Metro region and omitted Measure 26-244 which is for the Oregon Zoo. The problem was discovered the day ballots started arriving in mailboxes and corrected ballots were mailed by May 3rd. Affected voters will receive a letter explaining what happened and what to do. Each ballot has a specific identifier which will prevent more than one ballot from being counted.