2009 Iowa Code
Title 2 - Elections and Official Duties
Subtitle 1 - Elections
CHAPTER 43 - PARTISAN NOMINATIONS == PRIMARY ELECTION
43.65 - WHO NOMINATED.

        43.65  WHO NOMINATED.
         The candidate of each political party for nomination for each
      office to be filled by the voters of the entire state, and for each
      seat in the United States house of representatives, the Iowa house of
      representatives and each seat in the Iowa senate which is to be
      filled, who receives the highest number of votes cast by the voters
      of that party for that nomination shall be the candidate of that
      party for that office in the general election.  However, if there are
      more than two candidates for any nomination and none of the
      candidates receives thirty-five percent or more of the votes cast by
      voters of that party for that nomination, the primary is inconclusive
      and the nomination shall be made as provided by section 43.78,
      subsection 1, paragraph "a", "b" or "c", whichever is
      appropriate.  

         [S13, § 1087-a22; C24, 27, 31, 35, 39, § 593; C46, 50, 54, 58,
      62, 66, 71, 73, 75, 77, 79, 81, § 43.65]
         Referred to in § 43.66, 43.67, 43.77
         Nomination by convention, § 43.102, 43.109