City of Andover issued the following announcement on Oct. 29.
The City of Andover has a ballot drop off location. If you requested a ballot by mail and are an Andover resident you can return it to
Andover City Hall 1685 crosstown blvd NW
Friday, October 30, 8AM - 4:30PM
Saturday, October 31, 10AM - 3PM
Monday, November 2, 8AM - 5PM
Tuesday, November 3, 8AM - 3PM
Original source can be found here.