2009 Iowa Code
Title 12 - Business Entities
Subtitle 2 - Business and Professional Corporations and Companies
CHAPTER 490 - BUSINESS CORPORATIONS
490.804 - ELECTION OF DIRECTORS BY CERTAIN CLASSES OF SHAREHOLDERS.

        490.804  ELECTION OF DIRECTORS BY CERTAIN CLASSES OF
      SHAREHOLDERS.
         If the articles of incorporation authorize dividing the shares
      into classes, the articles may also authorize the election of all or
      a specified number of directors by the holders of one or more
      authorized classes of shares.  Each class, or classes, of shares
      entitled to elect one or more directors is a separate voting group
      for purposes of the election of directors.  

         89 Acts, ch 288, §75