He's facing the prospect of setting a new record for fewest sitting days spent in the Senate, but the Liberal Democrats' Duncan Spender is clear about what he wants to achieve.
David Leyonhjelm's former chief of staff will be sworn in to parliament on Tuesday, which could also mark the start of his final week in parliament.
With two Senate days scheduled before an election is due, Senator Spender is on track to eclipse Charles MacKellar - who lasted eight sitting days in 1903 - if he fails to win a seat at the May election.
Senator Spender told AAP he would make the most of the opportunity by pushing to ensure Senate estimates continues into next week - even if an election is called.
He said the Senate could continue to operate even after the government enters caretaker period, but doesn't know whether the opposition will support his motion.
That throws down the challenge to Labor, which has badgered the government over a lack of parliamentary action yet wouldn't want to miss a second on the campaign trail.
While the Liberal Democrats are fierce advocates of free speech, Senator Spender doesn't believe supporting a censure motion of independent Fraser Anning is at odds with libertarian values.
The Senate will vote on Tuesday to admonish the Queenslander for blaming the Christchurch terror attacks on Muslim immigration.
He defends Senator Anning's right to make the widely-condemned remarks along with his own right to support censuring them.
Senator Spender also intends to vote against Labor's bid to torpedo regulations which prevent long-term casual workers from claiming annual leave entitlements.
He says industrial relations laws are a "dog's breakfast" that primarily benefit lawyers rather than employers or workers.
Senator Spender will make a maiden speech on Wednesday where he hopes to focus on some of the lesser-known positions of his party.
The Liberal Democrats' founder will be one of three new faces sworn in to parliament on Tuesday, along with Labor's Raff Ciccone and Tasmanian Liberal Wendy Askew.
Senator Ciccone is set to be re-elected for a six-year term at the election after replacing factional ally Jacinta Collins at the top of Labor's Victorian ticket.
Senator Askew is taking her brother David Bushby's seat as he leaves parliament to take the plum job of Australia's consul-general in Chicago.
