; and (B) at least one member of the commission appointed from each of the categories of the approved selection pool described in section 202(b)(1). (3) Quorum A majority of the members of the commission shall constitute a quorum. (c) Staff; Contractors (1) Staff Under a public application process in which all application materials are available for public inspection, the independent redistricting commission of a State shall appoint and set the pay of technical experts, legal counsel, consultants, and such other staff as it considers appropriate, subject to State law. (2) Contractors The independent redistricting commission of a State may enter into such contracts with vendors as it considers appropriate, subject to State law, except that any such contract shall be valid only if approved by the vote of a majority of the members of the commission, including at least one member appointed from each of the categories of the approved selection pool described in section 202(b)(1). (3) Reports on expenditures for political activity (A) Report by applicants Each individual who applies for a position as an employee of the independent redistricting commission and each vendor who applies for a contract with the commission shall, at the time of applying, file with the commission a report summarizing— (i) any expenditure for political activity made by such individual or vendor during the 10 most recent calendar years