Del. Code tit. 15, § 5904

Copies of the notice and specifications verified as provided in § 5903 of this title shall be delivered to the Speaker or President, as the case may be, of the house having cognizance of the matter. The contestant shall deliver the contestant’s own notice and specifications with the contestant’s petition on the first day of the session, and the sitting member shall deliver a copy of the sitting member’s specifications to the Speaker or President when the sitting member delivers them to the contestant.