Original: Third parties , officially termed '' nonparty political organizations '' can appear on the ballot as well - five of these have had candidates on the ballot in Iowa since 2004 for various positions : the Constitution Party , the Iowa Green Party , the Libertarian Party , the Pirate Party , and the Socialist Workers Party .
Simplified: There are two major political parties in Iowa , the Iowa Democratic Party and the Republican Party of Iowa , as well as several unofficial third parties .