http://www.theaustralian.com.au/news/senate-voting-system-needs-urgent-reform/story-e6frg6n6-1227273730727

When lazy above the line voting is what has caused the problem in the first place. I believe that should be abolished but if there are 100 candidates on the ballot you can have a valid vote after a third or a half have been filled in. That is a matter of negotiation,