After reports that a stink bomb was found in a ballot box, Kent Police confirmed they are investigating.
A spokeswoman said two vials containing an unknown liquid were found in the Beacon Hill in Herne Bay.
Tests will be carried out on the substance.
More top news
Watch our report into air quality on the school run - who was exposed to higher levels of pollution - Iman by car, or Titas who walks?
The powerful stage adaptation of Khaled Hosseini's novel comes to the Mayflower.
Holly Green has the forecast