Canning: The Anticlimax Live (Plus Post-Count)

CANNING (Lib 11.8%) - called, Hastie (Lib) retain.

Status

On-the-day votes and most prepolls counted.  Current 2PP 55.3% (-6.5% swing) to Liberal. Unlikely to change greatly after remaining postals and other votes.

Postcount

Thursday 1st Oct: There has been very little movement in the 2PP as remaining votes are added (I believe there are now only a few hundred left).  The major interest now is in the internal polling claims mentioned below.

We finally have more detail of these in a report from The West Australian, that says not only that the Liberal Party had Hastie on 57% the weekend before Tony Abbott was rolled, but also that Liberal tracking throughout never dipped below "about 53-47".  However, if the internal poll series really included both a 53 and a 57 then the most likely explanation is random noise, rather than voting intention actually changing that much.  Usually internal polling is less reliable than public polling, but public seatpolling has been so bad in recent years that it's hard to dismiss competing internal poll reports entirely.

Thursday: There hasn't been a lot to add here, but 755 prepolls split 58.4% to Liberal (a 7.5% swing). Although this is a point larger than the overall swing, it's not especially meaningful as the number of non-PPVC prepolls is much smaller than at the general election.

Tuesday:  Not much extra progress to report in the postcount.  However an article in The Guardian incorrectly reports that postal votes are showing only a 2.3% swing to Labor.  This figure is derived by calculating the swing on postals from the 2013 overall result for the electorate, and ignores the well-known trend that postals favour the conservatives.  The correct baseline for calculating the swing on postals is the result on postals last time, ie 65.1%.

The other thing to bear in mind is that the postals added so far will mostly include the early postals, and while these are more likely to have been cast in the Abbott era, they are also more likely to have been cast by slightly more conservative voters. All the same by whatever measure the impact of the leadership change on the by-election was small: my reading of the polls is that they were pointing to it being only a couple of points overall, and such an impact (if it happened) can easily be lost in the noise of shifting voting method patterns or strengths of postal campaigns in an actual election.