Labor's primary vote is way down on previous elections, apparently their second lowest since ww2. Reason they picked up so many seats was preference flows due to the massive swings to the minor parties.
Would be nice if the big two recognised that a significant portion of the electorate can't stand either of them, hence the swing away from them in the last few elections. A good reason for the rise of the feral senate imo is the protest vote to keep the two major parties in line.