Jumping ship. 
No original thinking in these words.  They say the young and old have become disillusioned with politics.  Look at the latest romp in federal politics.  It means interviews, publicity and focus on the group of dual citizens whom the court has invalidated.
We have got it all wrong.
Loss of a seat in parliament is significant but no other specific "sentence" so to speak.  What is the penalty for wasting time and money on elections, for leading supporters up the garden path, for parliamentary salaries and more, for legislating while disqualified or for using resources to determine next in line or by-election. For High court deliberations priced at millions per day.  No penalty. Not even an apology.
There are some extenuating circumstances but that's too bad.