Source for Popular Vote data: Iowa Secretary of State. Official Election Results - Tabular State of Iowa - General Election, Tuesday, November 04, 2014, Iowa Secretary of State (http://electionresults.sos.iowa.gov/Views/TabularData.aspx?TabSRace=SpecifyARace%5ERaces%5E0%5E2%5E0%5EGovernor/%20Lt.%20Governor%5E84&ElectionID=84
) (accessed 14 Dec 2014)