33rd / 424th District Courts

I am frequently asked about how the 424th Judicial District gets its initial judge.  The District Courts Act of 1969 provides in pertinent part the following:

§ 24.311. Appointment of Initial Judge
When a judicial district is created by amendment to this subchapter, the governor shall appoint a qualified person to the office of district judge. The appointee serves until the next succeeding general election.

What is the statutory basis of the authority for the District Attorney elected in the 33rd Judicial District to also serve the 424th Judicial District?

At the outset of the bill drafting to create the new district (which bill ultimately became SB 1189) I had drafted language to piggy-back the D.A. onto the 424th but discovered that the Government Code already provided for that. New districts are now created under the "Judicial Districts Act of 1969" and the applicable provisions are as follows: