State v. Ramos
In State v. Ramos, 211 Wis. 2d 12, 564 N.W.2d 328 (1997), the trial court erroneously refused to strike a juror for cause.
As a result, the defendant was required to use a peremptory challenge to remove that juror. See 211 Wis. 2d at 23.
The supreme court concluded that a defendant forced to exercise peremptory strikes in order to correct a circuit court's error in voir dire impermissibly deprived the defendant of an important statutory right. See 211 Wis. 2d at 24-25.
The deprivation warranted reversal of the conviction and a new trial even though the jury that ultimately heard the case was impartial. See 211 Wis. 2d at 24.