The reallocation is short and long Senate terms for Tasmania distorts the 2016 election result.
Nicholas Klomp and Michelle Grattan discuss the week in politics.
Embattled Labor MP Susan Lamb has hit back at government pressure for her to quit parliament over her dual citizenship.
The High Court has ruled that Steve Martin is eligible to enter the Senate to replace the disqualified Jacqui Lambie.
The now-infamous section 44 of the Australian Constitution was a last-minute change by the authors, drafted in private and accepted out of weariness.
The Coalition now trails 48-52% on the two-party vote – the best result for it since April last year.
As the fallout from the dual citizenship saga continues, the Greens and Labor are set to fight a close contest in Batman, while Nick Xenophon has work to do ahead of the South Australian election.
Labor MP David Feeney has quit parliament and triggered a byelection in the Victorian seat of Batman.
2017 has felt like a chaotic year in Australian politics, and one in which policy progress has been swamped by other distractions. We can only hope that 2018 is calmer and more productive.
John Alexander won the seat of Bennelong after a fiercely contested byelection, and declared it 'the renaissance' of Malcolm Turnbull's leadership.
It will be months before Labor will know what damage the citizenship crisis might do to it.
The opposition failed in an attempt to get a 'job lot' of MPs referred to the High Court.
That it has taken more than five months and a compulsory declaration procedure for some MPs' dual citizenship issues to come to light reflects extremely badly on them.
If David Feeney was found to be ineligible, Labor would be at high risk of losing his Melbourne seat of Batman to the Greens.
Katy Gallagher is one of several Labor MPs likely to be referred to the High Court as the citizenship crisis turns on the opposition.
Michelle Grattan speaks with Nicholas Klomp about the week in Australian politics.
Nick Xenophon Team senator Skye Kakoschke-Moore has resigned from parliament after being advised she is a British citizen via her mother.
The polls are showing a close contest in the Bennelong byelection between the Liberals' John Alexander and Labor's Kristina Keneally.
Michelle Grattan and Nick Klomp discuss the week in politics.
Changing the Constitution is the only way to draw a line under this chaos.