Iowa Code § 515.27: Election.

The annual meetings for the election of directors shall be held at such time as the articles of incorporation or bylaws of the company provide; but if for any cause no election is held, or there is a failure to elect at any annual meeting, then a special meeting for that purpose shall be held on the call of a majority of the directors, or of those persons holding a majority of the stock, or of a majority of policyholders if a mutual company, by giving thirty days’ notice thereof in some newspaper of general circulation in the county in which the principal office of the company is located.