Neb. Const. art. III, § 29

(1). In order to insure continuity of state and local governmental operations in periods of emergency resulting from enemy attack upon the United States, or the imminent threat thereof, the Legislature shall have the power and the immediate duty, notwithstanding any other provision to the contrary in this Constitution, to provide by law for:

(a) The prompt and temporary succession to the powers and duties of all public offices, of whatever nature and whether filled by election or appointment, the incumbents of which, after an attack, may be or become unavailable or unable to carry on the powers and duties of such offices;

(b) The convening of the Legislature into general or extraordinary session, upon or without call by the Governor, during or after a war or enemy caused disaster occurring in the United States; and, with respect to any such emergency session, the suspension or temporary change of the provisions of this Constitution or of general law relating to the length and purposes of any legislative session or prescribing the specific proportion or number of legislators whose presence or vote is necessary to constitute a quorum or to accomplish any legislative act or function;

(c) The selection and changing from time to time of a temporary state seat of government, of temporary county seats, and of temporary seats of government for other political subdivisions; to be used if made necessary by enemy attack or imminent threat thereof;

(d) The determination, selection, reproduction, preservation, and dispersal of public records necessary to the continuity of governmental operations in the event of enemy attack or imminent threat thereof; and

(e) Such other measures and procedures as may be necessary and proper for insuring the continuity of governmental operations in the event of enemy attack or imminent threat thereof.

(2). In the exercise of the powers hereinbefore conferred, the Legislature shall in all respects conform to the requirements of this Constitution except to the extent that, in the judgment of the Legislature, so to do would be impracticable or would admit of undue delay.