State v. Nilsen
In State v. Nilsen, 134 Ariz. 431, 657 P.2d 419 (1983), the Arizona Supreme Court discussed the various methods by which a defendant can admit the elements of an offense when asserting an entrapment defense. The court stated a defendant "need not take the stand in order to assert the defense of entrapment." Id. at 432, 657 P.2d at 420.
However, the "admission must be made in some affirmative manner and cannot be assumed from a defendant's silence." Id.
Contrary to Williamson's argument, the court stated that a defendant may "stipulate to the admission" or "have his admission of the elements read into evidence." Id.