W. Va. Code § 3-1-38
The commissioners of election shall preserve order at, and in the vicinity of, the polls, and keep the way to the polls open and free from obstruction, and may direct disorderly persons to be removed therefrom, and, if necessary and proper, to be taken and held in custody until sunrise of the next day, or for any shorter time, which may be done by any sheriff or constable or other person or persons designated by the commissioners of election. For such purpose no warrant or authority in writing shall be necessary. The jail of the county or other place designated by the commissioners of election may be used as the place of custody. But any person so arrested shall have an opportunity to vote, if he be entitled to do so, before he shall be committed to jail, if he so desires and shall be prepared to do so promptly.
W. Va. Code § 3-1-38