Iowa Code § 60.7: Contestant to file bond.

The contestant shall file in the office of the clerk of the supreme court a bond, with security to be approved by the clerk of the supreme court, in such amount as shall be set by the presiding judge of the court, conditional to pay all costs in case the election be confirmed or the contest dismissed. The presiding judge shall further set the date upon which the required bond shall be filed. If the required bond is not filed by the date set, the contest shall stand dismissed by operation of law.