West virginia constitution
Article VI: the legislature
Section 54

The Legislature of West Virginia, in order to insure continuity of state and local governmental operations in periods of emergency resulting from disasters caused by enemy attack, shall have the power and the immediate duty (1) to provide for prompt and temporary succession to the powers and duties of public offices, of whatever nature and whether filled by election or appointment, the incumbents of which may become unavailable for carrying on the powers and duties of such officers, and (2) to adopt such other measures as may be necessary and proper for insuring the continuity of governmental operations.