Wisconsin constitution
Article IV: legislative
As created april 1961.

The legislature, in order to ensure continuity of state and local governmental operations in periods of emergency resulting from enemy action in the form of an attack, shall (1)forthwith 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 offices, and (2) adopt such other measures as may be necessary and proper for attaining the objectives of this section.

Structure Wisconsin constitution