Prohibition of simultaneous membership: rules require vacating one or more legislative seats when elected to multiple bodies. No person may be a member of both Houses of a State Legislature, and the State must provide by law for vacation of one seat when a person is chosen to both. Membership of two or more State Legislatures specified in the First Schedule is similarly prohibited, with presidential rules able to prescribe a period after which multiple seats become vacant unless the member resigns all but one. Seats also vacate on specified disqualifications, accepted written resignation, or on Speaker/Chairman-declared vacancy for unauthorised absence of sixty days, excluding prorogation or long adjournments.