W. Va. Code § 3-7-4
Any person intending to contest the election of another as senator or delegate shall, within ten days after the election is certified, give him or her notice thereof in writing and a list of the votes he or she will dispute, with the objections to each, and of the votes rejected for which he or she will contend. If the contestant objects to the legality of the election or the qualification of the person returned, the notice shall set forth the facts on which the objection is founded. The person whose election is contested shall, within ten days after receiving the notice, deliver to the contestant a like list of the votes he or she will dispute and of the objection to each, and of the rejected votes he or she will claim; and, if he or she has any objection to the qualification of the contestant, shall specify in the notice the facts on which the objection is founded. Each party shall append to the notice an affidavit that the matters therein set forth, so far as they are stated of his or her knowledge, are true and that, so far as they are stated on the information of others, he or she believes them to be true. If new facts are discovered by either party after he or she has given notice, he or she may give an additional notice or notices to his or her adversary, with specifications and affidavit as above prescribed.
The notice of contest shall be presented to the proper branch of the Legislature, within ten days after its meeting.
W. Va. Code § 3-7-4