Mo. Rev. Stat. § 115.912
Current with changes from the 2023 Legislative Session
An application for a military-overseas ballot is timely if received by 5:00 p.m. on the Friday prior to the election. An application for a military-overseas ballot for a primary election, whether or not timely, shall be effective as an application for a military-overseas ballot for the general election.
§ 115.912, RSMo