They have a duty to follow Mark’s book very closely.
Interestingly enough, numerous RAT legislators in the Illinois General Assembly have announced they strongly support a Constitutional Convention of the states:
http://www.freerepublic.com/focus/f-chat/3233521/posts
Obviously, they must be outstanding patriots who want to reign in control of the feds and enforce the 10th amendment in order to restore our Republic to what the founders (and Mark Levin, his name is interchangeable with Thomas Jefferson) envisioned.