The suspect's vehicle, caught on camera in Old Town, is believed to be a white Ford Ranger that is operated by a white male, the police department said in a media release.
The vehicle has stickers in the back window with one in the middle and two on the side.
Maj. Joseph Manning said Friday that at least three separate candidate signs were stolen.
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Anyone with information can call the police department at 843-706-4550 or Sgt. James Carmany at 843-706-4532.