Steven Henning "Steve" Warnstadt (born August 2, 1967) was the Iowa State Senator from the 1st District. A Democrat, he has served in the Iowa Senate from 2003 until 2011. He received his BA from Drake University and his MA from Temple University, and is serving as an adjunct instructor with Western Iowa Tech Community College and as an intelligence officer with the Iowa Army National Guard. Warnstadt did not seek re-election in 2010.