A peremptory challenge can be taken by either party and may be oral. It is an objection to a juror for which no reason need be given, but upon which the court must exclude him.
Idaho Code § 19-2015
Peremptory challenge defined
Current official text: Idaho Statutes (Idaho Legislature). Digitized from the UniCourt Code Improvement Commission public-domain capture. Reproduced from public-domain Idaho statutes; confirm against the official source for the current text. Not legal advice.