Taken from the official GSA Election Regulations
3.1.1 All Officers must be Ordinary Members of York GSA. (See Memorandum and Articles of Association, 4.3 and 4.4 for Ordinary Members)
3.1.2 All Ordinary Members of the GSA, including PhD students in their writing-up year, are eligible to stand for election. All members must be given equal opportunity to stand.
3.1.3 Students are permitted to stand for election on the provision that they can satisfactorily prove that they will be able to serve the entire term of office as a registered student. In the case of Officers elected during by-elections, this term of office may be less than one full academic year. If, at any point during their term of office, they cease to be a registered student, and therefore a member of the GSA, they must step down.
3.1.4 Candidates for full-time officer positions will be required to confirm their eligibility to act as Trustees of the company, under the 2011 Charities Act. If, at any point during their term of office, they cease to be eligible to fulfil the role of Trustee or are disqualified for any reason then they may also be disqualified as a full-time officer. (See Memorandum and Articles of Association, 36)
3.1.5 No one may serve as a full-time officer for a total of more than two years. (See Memorandum and Articles of Association, 57)
These are the eligibility criteria set by the GSA. There may be other University or organisational restrictions to candidacy beyond the control of the GSA.