There are security measures in place to prevent this from happening, so hopefully this occurrence will be very rare.
If you attend a voting location only to find out that your card has already been used to vote, you will be directed to the Returning Officer on site. A full procedure is in place to allow for you to vote after making a declaration. This process will be then handed over to Elections PEI for further investigation and to the police if required.
Anyone found guilty of using another voter’s VIC is liable for a fine of up to $2000 and/or up to two years in prison.