; and (B) at least one member of the commission appointed from each of the categories of the approved selection pool described in section 512(b)(1) approves such final plan. (d) Written evaluation of plan against external metrics The independent redistricting commission of a State under this title shall include with each redistricting plan developed and published under this section a written evaluation that measures each such plan against external metrics which cover the criteria set forth section 103(a), including the impact of the plan on the ability of communities of color to elect candidates of choice, measures of partisan fairness using multiple accepted methodologies, and the degree to which the plan preserves or divides communities of interest. (e) Deadline The independent redistricting commission of a State under this title shall approve a final redistricting plan for the State not later than November 15, 2024. 514. Establishment of related entities (a) Establishment or Designation of Nonpartisan Agency of State Legislature (1) In general Each State shall establish a nonpartisan agency in the legislative branch of the State government to appoint the members of the independent redistricting commission for the State under this title in accordance with section 511. (2) Nonpartisanship described For purposes of this subsection, an agency shall be considered to be nonpartisan if under law the agency— (A) is required to provide services on a nonpartisan basis; (B) is required to maintain impartiality