In 1996, Senator Dix made his first bid for the Iowa House of Representatives. He served five two-year terms in the Iowa House. During his service in the Legislature, Senator Dix has been an outspoken advocate for limiting government, encouraging an environment that fosters economic growth and challenging the status quo. He has sponsored legislation eliminating the inheritance tax and the tax on residential utilities, as well as giving working Iowans a 10 percent across-the-board income tax reduction.
Senator Dix served on numerous House committees and held leadership roles as Chair of the Government Oversight Committee, House Assistant Majority Leader, and House Appropriations Committee Chairman. He also served as the Legislative Campaign Chairman, where he spearheaded Republican campaign efforts to retain the majority in the House of Representatives in 2002 and 2004.
During his tenure at the State Capitol, Senator Dix has been honored by many organizations throughout the State of Iowa. He was named a “Friend of Agriculture” by the Iowa Farm Bureau each year. He was named “Guardian of Small Business” by the National Federation of Independent Business/Iowa. He has been awarded the Outstanding Service Award by the Iowa Health Care Association. Through the years, he was awarded “Legislator of the Year” by several organizations, including Iowa Motor Truck, Inc., Association of General Contractors, and Independent Telephone Companies. He was also named “Friend of the Fair."
On October 22, 2009, Senator Dix announced his plan to seek political office once again. He defeated the incumbent in Iowa Senate District 9 on November 2, 2010. He was re-elected in 2014 to serve the people of Iowa Senate District 25.