Missouri Desertification Showing of Interest is a process by which a union can demonstrate that a majority of its members are no longer interested in representation. This process is used to revoke union certification and end collective bargaining rights. There are two types of Missouri Desertification Showing of Interest: a secret ballot election and a petition. In a secret ballot election, a union must demonstrate that a majority of its members are no longer interested in representation. This requires the union to collect signatures from at least 50% of its members. Once the signatures are collected, the union must submit them to the Missouri State Board of Mediation. The board will then conduct an election to determine whether a majority of the members are in favor of revoking union certification and ending collective bargaining rights. In a petition, a union must collect signatures from at least 30% of its members. Once the signatures are collected, the union must submit them to the Missouri State Board of Mediation. The board will then review the petition and determine whether a majority of the members are in favor of revoking union certification and ending collective bargaining rights. Missouri Desertification Showing of Interest is an important process for unions to ensure their members are still interested in representation. It allows for unions to maintain their certification and collective bargaining rights.