The following table indicates the party of elected officials in the U.S. state of Iowa:
The table also indicates the historical party composition in the:
For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.
The parties are as follows: Democratic (D), Republican (R), Free Soil (FS), and Whig (W).
References
Political party strength in Iowa Wikipedia(Text) CC BY-SA