Republican Gary Mohr of Bettendorf is running for a fourth term, while Democrat Ryan Carstensen of LeClaire says he's not running due to his job, and lack of support from the party.
Mohr is chair of the Iowa House Appropriations Committee, and last spring helped approve the elimination of the state income tax on retirement benefits.
"Too many of my constituents - they grow up here, they build their career here, they raise their family here, and they build their wealth here. And as soon as they retire they change their state of residence to Texas, Florida, or Illinois, states that don't tax retirement income."
When it takes effect in January, he hopes this will keep people in Iowa, and even convince others to move to the state.
During his first term, Mohr also sponsored a bill allowing families living at the Arsenal to send their children to any nearby school district, up until then they'd only attended schools in Illinois.
"It's not going to be the piece that saves the Arsenal but it's one of the things the Pentagon has said to keep bases open in the future they are going to have to be very concerned about providing enhanced educational opportunities."
Mohr is retired after working for 41 years in college administration - for Palmer College and the Eastern Iowa Community Colleges.