Elsewhere:

• Liberal MP Fran Bailey has announced she will not contest her Victorian federal seat of McEwen at the next election. Bailey retained the seat in 2007 by a court-determined margin of just 27 votes, but the Liberals would have hoped her local popularity in the wake of the February bushfires might help her hold on at the next election. As it stands, the Liberal preselection is unlikely to be keenly sought. Labor’s candidate from 2007, former state upper house MP Rob Mitchell, was said by Rick Wallace of The Australian to maintain “strong local numbers”. However, the Labor national executive’s suspension of the preselection process a fortnight ago has prompted talk its newly acquired powers might be used to install a candidate of its own choice. Rick Wallace subsequently reported that Andrew MacLeod, a “former soldier and UN disaster expert”, had also emerged as a contestant (UPDATE: Greensborough Growler informs me he was also Labor’s candidate in 2001).

• Linda Silmaris of the Daily Telegraph reports senior Labor sources say it is now unlikely Belinda Neal will be forced out of Robertson, an outcome so very recently seen as a foregone conclusion.

• Alex Easton of The Northern Star reports local Nationals are hoping Stuart George, Richmond Valley councillor and son of state Lismore MP Thomas George, will be the party’s candidate for the federal seat of Page. Labor’s Janelle Saffin won the seat in 2007 on the retirement of Nationals incumbent Ian Causley with a margin of 2.4 per cent, picking up a 7.8 per cent swing. The redistribution proposal shaves 0.2 per cent off the Labor margin.

• Robert Ellicott, architect of the Coalition’s constitutional strategy in 1975, has written an article for The Australian in which he muses on the prospect of a Governor-General refusing a Prime Minister’s request for a double dissolution. This has prompted a most informative discussion in comments.

• The Australian Electoral Commission has released approximate figures on the age breakdown of the 1.2 million Australians not on the electoral roll, which progressively falls from 30 per cent of those aged 18 to 24 to 4 per cent of those aged over 65.

• The New South Wales Greens have listed nominees for state upper preselection and the vacancy to be created by Lee Rhiannon’s bid for the Senate. Both incumbents due for re-election, Ian Cohen and Sylvia Hale, are retiring. High-profile Byron Shire mayor Jan Barham is reportedly well-placed for a spot, being an ally of the locally based Cohen.

• The Australian Democrats have lost their last remaining parliamentary member after South Australian upper house MP David Winderlich quit to sit as an independent. The party is now registered only in South Australia and New South Wales.

• Keep following the by-election action on the regularly updated threads for Bradfield, Higgins and Willagee.

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.

• For those with ready access to academic journals, the latest edition of the Australian Journal of Politics and History features a look at the role of the Senate in the Australian political system by Stanley Bach, lately of the Congressional Research Service of the US Library of Congress, and an examination of conscience voting in the federal parliament by John Warhurst of the Australian National University. The Australian Journal of Political Science has an overview of the introduction of proportional representation to the Victorian upper house at the 2006 election, by Nick Economou of Monash University.

• The Victorian Electoral Boundaries Commission has concluded there will be no state redistribution before the 2010 election, at least on the basis of “current information”. The present boundaries have been in place since the 2002 election. Hat tip to Tom the first and best. UPDATE: Further props to Tom for noting below that the determination rests on a definition of a “general election” that does not count the 2002 election, as it was conducted on the pre-reform regime when only half the Legislative Council faced election – perhaps contrary to the drafters’ intention.

• The Western Australian branch of the Australian Democrats has been deregistered after declining to challenge the electoral commissioner’s determination that it did not have 500 members.