Imagine you wake up on July 3 and somehow the ALP has won a close election.
Bill Shorten has achieved something few people imagined he could attain.
Does anyone seriously imagine anyone in the Caucus would challenge anything he put up.
The very idea of the ALP winning the election but caucus over-ruling Shorten and Cabinet on border protection even though he changed policy in this area is so fanciful to be absurd.
The tight numbers in the ?house of Representatives would simply exacerbate this. The party would be tightly disciplined both in caucus and parliament. There would be little debate on any issue let alone a controversial one given the circumstances of the win.