public Set<User> addElectorate(String filename) {
		Set<User> userSet = new HashSet<User>();
		File file = new File(filename);
		if (file.exists()) {
			try {
				Scanner scanner = new Scanner(file);
				
				while (scanner.hasNextLine()) {
					String GUID = scanner.nextLine().trim();
					User user = getUser(GUID);
					userSet.add(user);
				}
			} catch (FileNotFoundException e) {
				e.printStackTrace();
			}
		} else
			throw new RuntimeException("Electorate filename doesn't exist");
		return userSet;
	}