What’s more:

• George Megalogenis of The Australian charts the rise of the centre left with reference to long-term Newspoll trends.

• Glenn Milne of The Australian has written a skeptically received article which speaks of plotting against Julie Bishop partly motivated by Senator Matthias Cormann’s designs on her blue-ribbon seat of Curtin. Andrew Bolt has published Cormann’s denial.

• Electoral Commissioner Ed Killesteyn advises the government to get hip by allowing voters to enrol online.

• Rick Wallace of The Australian notes the Victorian ALP is struggling to meet its affirmative action quota of 35 per cent female candidates in winnable seats, making it “almost imperative that a woman replaces a retiring woman, and that at least one in two of all retiring men are replaced by women”. While little action is expected ahead of the next federal election, speculation is said to surround the state seats of Craig Langdon (Ivanhoe), Peter Batchelor (Thomastown), Lynne Kosky (Altona) and John Pandazopoulos (Dandenong). More substantially, “former speaker Judy Maddigan has confirmed she will retire and she is expected to support former Labor staffer Natalie Sykes-Hutchins to replace her in the seat of Essendon”.

• Adelaide’s Independent Weekly reports on Malcolm Mackerras’s tip for next year’s state election: Labor to be comfortably returned, with the loss of only Norwood, Mawson and Light. The report notes something I had neglected to relate previously: SA Murray Irrigators Association chair Tim Whetstone was preselected in November as the Liberal candidate for Nationals MP Karlene Maywald’s seat of Chaffey, ahead of Citrus Growers of SA president Mark Chown and businessman Brian Barnett. Mackerras tips Whetstone to win.

• Ben Raue at The Tally Room has a post on whether the federal parliament should be enlarged, with reference to international practice.

• Possum notes the cubic polynomial distribution of two-party electorate results, and its implications for interpreting marginal seat exit polls.

Courtesy of the April edition of the invaluable Democratic Audit Update:

• The Joint Standing Committee on Electoral Matters will hold a “roundtable public hearing” on submissions to the green paper on campaign finance at Parliament House on Thursday, from 9.30am to 1pm.

• The Greens’ “parliamentary contract” with Labor’s minority government in the Australian Capital Territory is reviewed by Jenny Stewart in the Canberra Times.

• Brian Costar examines Electoral Commissioner Ed Killesteyn’s demolition of the spurious justifications for the Howard government’s 2005 electoral “reforms” at Inside Story.

• The Australian Parliamentary Library has published a research paper on the electoral demise of the Australian Democrats by Cathy Madden.

• Speculation continues to mount that former WA Health Minister and Attorney-General Jim McGinty (left) will shortly be calling it a day, initiating a by-election in Fremantle to coincide with the state’s May 16 daylight saving referendum. On ABC television news, Peter Kennedy reported that rumoured preselection contender Peter Tagliaferri (right) met with McGinty and ALP state secretary Simon Mead to “discuss the possible vacancy”. However, Alan Carpenter is offering point-blank denials to speculation he might also vacate his seat of Willagee, which puts the prospect of a dangerous preselection stoush between Tagliaferri and LHMWU state secretary Dave Kelly back on the agenda. Steve Grant of the Fremantle Herald reports:

Alan Carpenter says he will remain in state parliament till the next election. He ruled out the possibility of a by-election for his safe Labor seat of Willagee … He shrugged off speculation that he and Fremantle MP Jim McGinty were contemplating mid-term retirement to make way for new Labor blood, “you might not believe me, but often I’m the last person to hear about these things”. It seems Jandakot Liberal MP Joe Francis could be more tuned in to Labor machinations than the former premier, becoming the third person to tell the Herald that LHMWU secretary Dave Kelly was being groomed to take over a Labor seat.

• What’s more, Robert Taylor of The West Australian has mused on the possibility of star Gallop/Carpenter government minister Alannah MacTiernan moving to federal politics by taking on Don Randall in Canning, where redistribution has shaved the Liberal margin from 5.6 per cent to 4.3 per cent.

• Staying in WA, the Liberal Party is having an interesting time dealing with jockeying ahead of preselection for the safe southern suburbs seat of Tangney. Sitting member Dennis Jensen (left) lost the preselection vote ahead of the last election to Matt Brown, former chief-of-staff to Defence Minister Robert Hill, but the result was overturned by prime ministerial fiat. As Robert Taylor puts it, “this time there’s no John Howard and Dr Jensen looks decidedly shaky”. Against this backdrop, local Liberal branches have been inundated with membership applications from “Muslim men”, who are believed – certainly by the Brown camp – to be enthusiasts for the incumbent. A compromise reached at the state executive saw admission granted to half the applicants, who can apparently thank Julie Bishop for arguing that “many of her east coast colleagues with big Muslim populations in their electorates were nervous about the outcome”. Taylor says a Brown supporter told him “the new members were associated with ‘strident anti-Israel statements’ from the Australian National Imams Council”.

• With independent MP Rory McEwen to call it a day, the Liberals would be pencilling in his seat of Mount Gambier as a soft target at next year’s state election. However, the Border Watch reports Liberal candidate Steve Perryman, the mayor of Mount Gambier, might face an independent challenge from Don Pegler, the mayor of Grant District Council, who has perhaps been inspired by Geoff Brock’s boilover in Frome. Grant covers the electorate’s extensive rural areas outside of the City of Mount Gambier, although the latter accounts for three times as many voters.

• Andrew Landeryou at VexNews offers a colourful and detailed account of the gruelling Liberal preselection jockeying in Kooyong.

• Landeryou also notes conflicting reports on the prospect of a Right-backed preselection challenge by Noel McCoy against Phillip Ruddock in Berowra.

• Andrew Leigh and Mark McLeish have published a paper at Australian Policy Online which asks a most timely question: Are State Elections Affected by the National Economy? Using data from 191 state elections, they find a positive correlation between low unemployment and success for the incumbent, “with each additional percentage point of unemployment (or each percentage point increase over the cycle) reducing the incumbent’s re-election probability by 3-5 percentage points”. Furthermore, “what matters most is not the performance of the state economy relative to the national economy, but the state economy itself”. That being so, it seems voters “systematically commit attribution errors – giving state leaders too much blame when their economy is in recession, and too much credit when it is booming”.

• The Parliamentary Library has published a note on the redistribution of WA’s federal electorates.