Because politicians lack principles and integrity. They are like paper boats on a pond. The merest hint of a breeze sends them sailing in a new direction. So, Christian, ‘Yes, I voted against Cannan’s leadership, but now he’s offered me promotion so of course I’ll accept it’… Johnson…’ No dear electorate, I won’t accept a Minister’s job if elected….oh look, yes I have’. What you can be sure of however is that the new direction will, first and foremost, be one that they perceive gains advantage to them.