The 45th House District seat wasn't supposed to be on the April ballot.
Former state Rep. Kip Kendrick was re-elected to the post in November, his final term representing residents in Boone County.
Gov. Mike Parson called the special election Jan. 27, and Libertarian candidate Glenn Nielsen and Democratic candidate David Tyson Smith on Tuesday will vie for votes to become the 45th District state representative.
Nielsen, a member of the Missouri Libertarian Party for over two decades, decided to run after the events of the death of George Floyd last summer and the economic downfall due to the COVID-19 pandemic.