- Iowa caucus voters might like candidates who invoke the 'heartland,' but the term is toxic — The romaticized, whitewashed term alienates a rapidly diversifying country whose voters are increasingly concentrated in large urban centers and on the coasts. https://www.nbcnews.com/think/opinion/iowa-caucus-voters-might-candidates-who-invoke-heartland-term-toxic-ncna1129191 12 comments politics