70.1. The presidents of the local councils have the following responsibilities:

a) To call and to lead the sessions of the local council;

b) To receive, personally or through the secretary, the applications for registration of senatorial candidates by the principle of plurality presented by the national political parties;

c) To receive the requests for accreditation presented by the Mexican citizens, or the associations that they belong to, to participate as observers during the electoral process;

d) To inform the Executive Secretary of the Institute of the counts of the election of senators by both principles and the declarations of validity referring to the election of senators by the principle of plurality, as well as of the challenges lodged within the five days following the respective session;

e) To oversee the delivery to the district councils of the approved documents, necessary materials and elements for the discharge of their duties;

f) To issue the Majority and Validity Certificate of the election of the formulas of senators that have obtained the majority of votes as well as the Seat Allocation Certificate to the formula of the largest minority in accordance with the count and declaration of validity of the local council, and to inform the General Council;

g) To oversee the compliance with the rulings issued by the respective local council;

h) To receive and dispatch the challenges lodged against the acts or decisions by the local council, in the terms of the applicable law, and

i) The other responsibilities established by this Law.

2. The presidents will be assisted in their duties by the council secretaries. The secretaries will be in charge of the consideration of the challenges that the local council should resolve.

3. The president of the local council will call a session when he considers it necessary or when it is requested by the majority of the representatives of the national political parties. The call will be issued in writing.