Section 249.737 - Filing officer for nomination by assembly of electors(1) The filing officer for the office for which nominations will be considered by an assembly of electors shall supervise the conduct of the nominating convention. The filing officer shall insure that when the assembly of electors makes a nomination, the number of electors required to be present at the nominating convention for the purpose of constituting an assembly is at least equal to each of the following: (a) The number of signatures of assembly members in the minutes of the assembly.(b) The number of electors present at the nominating convention.(2) If an assembly of electors will consider nominations for an office for which the Secretary of State is the filing officer and an office for which the county clerk or chief city elections officer is the filing officer, the Secretary of State shall be the supervising officer under subsection (1) of this section.(3) If an assembly of electors will consider nominations for an office for which the county clerk is the filing officer and an office for which the chief city elections officer is the filing officer, the county clerk shall be the supervising officer under subsection (1) of this section.