PRESQUE ISLE, Maine — Democratic vice presidential candidate Kamala Harris’ husband Doug Emhoff campaigned in Aroostook County on Saturday, becoming one of the most prominent campaign surrogates to visit Maine during the presidential cycle.Emhoff toured the Lundeen Potato Facility in Mars Hill and spoke at a get-out-the-vote rally at Farm Park in Fort Fairfield to help the Biden-Harris ticket win Maine’s toss-up 2nd Congressional District.