 Additionally, up to twelve alternate jurors may be selected as well, depending on the nature of the case and how long the trial is expected to last.The prosecution, the accused and the civil parties (or their counsel) all have the right of peremptory challenge; they each may object to half the number of (effective and alternate) jurors at most, without giving a reason for their objection.The presiding judge may only object to a juror in order to ensure there are at least four men and four women on the jury.