If a member of parliament's seat becomes empty after someone has questioned their election, you cannot fill the empty seat until the issue is resolved. The seat will stay empty until a court makes a decision about the election. If the court decides the member of parliament was not elected fairly, and someone else was, you still cannot fill the seat with a new election until this is sorted out, and it might not happen at all, depending on what the court says about who was really elected, as stated in section 55 or 55A.