Professionals or Part-timers?

While the minor party and independent senators might attract media attention, the overwhelming majority of Australia's upper house members are affiliated with the major political parties. These senators are highly partisan: they are dependent on the party for re-election and play a potentially vital role in assisting their parties to secure the maximum number of House of Representative seats, acting as 'shock troops' in marginal seat campaigning. How does this impact the way these senators go ab