You may need to apply early. You may pick up the application materials just before you go home for the summer. You then can write your essays, prepare a resume, etc., over the summer. Political science and public service interns are associated with the political science department at the University of Melbourne where they also take two courses in political science. History and sociology interns are associated with the history and sociology departments respectively.
Students intern two to three days per week and participate in an internship course.
Part of the internship course includes a significant writing assignment. The internship and the internship course together provide 1.5 units of credit. Students typically take two courses for a total of 1.5 units. Thus, the normal credit load is three units. Political science interns usually intern with a member of the Victorian parliament.