121Presentation and service of parliamentary election petition
(1)A parliamentary election petition may be presented by one or more of the following persons—
(a)a person who voted as an elector at the election or who had a right so to vote ; or
(b)a person claiming to have had a right to be elected or returned at the election ; or
(c)a person alleging himself to have been a candidate at the election.
(2)The number whose election or return is complained of is hereinafter referred to as the respondent, but if the petition complains of the conduct of a returning officer, the returning-officer shall for the purposes of this Part of this Act be deemed to be a respondent.
(3)The petition shall be in the prescribed form, state the prescribed matters and be signed by the petitioner, or all the petitioners if more than one, and shall be presented to the High Court, or to the Court of Session, or to the High Court of Northern Ireland, depending on whether the constituency to which it relates is in England and Wales, or Scotland or Northern Ireland.
(4)The petition shall be presented by delivering it to the prescribed officer or otherwise dealing with it in the prescribed manner; and the prescribed officer shall send a copy of it to the returning officer of the constituency to which the petition relates, who shall forthwith publish it in that constituency.
(5)The petition shall be served as nearly as may be in the manner in which a writ or summons is served or in such other manner as may be prescribed.