Political party strength in Iowa

The following table indicates the party of elected officials in the U.S. state of Iowa:
 * Governor
 * Lieutenant Governor
 * Secretary of State
 * Attorney General
 * State Auditor
 * State Treasurer
 * Secretary of Agriculture

The table also indicates the historical party composition in the:
 * State Senate
 * State House of Representatives
 * State delegation to the U.S. Senate
 * State delegation to the U.S. House of Representatives

For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.