Mo. R. Gov. Bar Jud. 10.30
At any time after the governor has received a certificate of nomination but has yet to make an appointment, the commission may withdraw the name of any nominee for any cause the commission deems to be of such a substantial nature as to affect the nominee's qualifications to hold the office, and the commission may submit the name of another nominee as a substitute.
Whenever two or more vacancies exist at the same time in the same court and the commission has submitted to the governor separate certificates of nomination for each of such vacancies, the commission may, in its discretion, before the governor makes an appointment, withdraw all of such nominations, change the name of any such nominee from one certificate to another, or substitute the name of a person for any of those previously nominated when a name has been withdrawn for cause, and resubmit the certificate of nomination as so changed.
If any nominee dies or requests the commission in writing to withdraw his or her name, the commission shall withdraw such nomination and substitute another nominee to replace him or her.
The commission may withdraw a nomination and submit a new nomination only at a meeting and only by the execution of a certificate of withdrawal of nomination and a certificate of new nomination (both of which may be in the form of a communication to the governor), signed by the chair and secretary on behalf of the commission. If the nomination being withdrawn has been submitted to the governor, the commission's chair shall forthwith notify the governor in writing of the commission's action and transmit the certificates of withdrawal and new nomination to the governor. The commission's chair or a majority of its members may call a meeting to consider the withdrawal of nominations. The withdrawal of nominations may be made at the same meeting at which they were made or at any later meeting, and such action may be proposed by any commission member.
Nothing herein contained shall be deemed to impose upon the commission, nor shall it recognize, any obligation whatsoever to reconsider or withdraw any nomination except in the instances and for the reasons herein expressed.
Mo. R. Gov. Bar Jud. 10.30