It is good cause for challenge on the part of the state, but not on the part of the defendant, that:
(1) The juror is biased against the enforcement of the statute charged to have been violated, or is of the fixed opinion that the statute is invalid or unconstitutional;
(2) The juror tendered in a capital case who has conscientious scruples against the infliction of capital punishment and makes it known:
(a) That he would automatically vote against the imposition of capital punishment without regard to any evidence that might be developed at the trial of the case before him;
(b) That his attitude toward the death penalty would prevent or substantially impair him from making an impartial decision as a juror in accordance with his instructions and his oath; or
(c) That his attitude toward the death penalty would prevent him from making an impartial decision as to the defendant's guilt; or
(3) The juror would not convict upon circumstantial evidence.
Amended by Acts 1968, Ex.Sess., No. 13, §1, emerg. eff. Dec. 27, 1968, at 1:00 P.M; Acts 1990, No. 366, §1.