On 08/06/2017 13:16, Brian Lawrence wrote:
> The Conservative lead since Sunday averages 7.3%.
>
> This a pretty good prediction:
> <
http://www.electoralcalculus.co.uk/gainloss.html>
>
> The quick summary of that: Con to gain 31 seats, lose 4; Lab to gain 6,
> lose 20; Lib-Dems to lose 5; SNP to lose 7 - all others remain the same.
>
> Total MPs Con 358, Lab 218, L-D 3, SNP 49, PC 3, Green 1 (N.Ireland 18)
That website now has an article that discusses their prediction failure.
<
http://www.electoralcalculus.co.uk/homepage.html>
Scroll down to "Voters astonish pollsters".
"For yet another time, the pre-election campaign polls contained
considerable error. The final average of the campaign polls showed an
average Conservative lead over Labour of 6.8pc, whereas the actual
difference in vote share was only 2.5pc.
"That gives a poll error of over 4pc, which is only partially better
than the poll error in 2015 of around 6pc."
"The polling data also seems to have confused the attempts to quantify
the effect of the EU referendum. The data suggested that Remain voters
would stick with their 2015 party, but the pattern of seat results
suggest that seats in Remain areas saw significant defections away from
the Conservatives.
"Allowing for both of these problems, the basic model, given the correct
inputs would have predicted the result to within about ten seats. This
is similar model error to that seen in previous years.
"It may be that this year's polling error was the mirror image of 2015.
Last time, the pollsters asked respondents whether or not they intended
to vote, and many young people over-confidently predicted that they
would vote. To compensate, pollsters started disregarding what people
said and used their own models to work out whether someone would vote.
But the younger voters seem to have been so enthused by Jeremy Corbyn's
Labour party that they voted in larger numbers than predicted. Truly
"voters astonish pollsters". And us."
** ** **
It does seem likely that young people voted in larger numbers than in
previous elections, though this hasn't yet been confirmed. One pointer
is the increased turnout compared to the 2015 election. Turnout last
Thursday was 68.7% an increase of 2.3%. I dug out the numbers for
turnout in the separate countries:
England 69.1% +3.2%
Scotland 66.4% -4.7% <-------- !!!
Wales 68.6% +3.0%
N Ireland 65.4% +7.3%
On the face of it, in Scotland many people who voted SNP in 2015 didn't
vote at all this time. SNP share fell by 13.1% while Conservative share
increased by 13.7%. Labour share also increased a little - 2.8%, while
Lib-Dem share fell slightly (by 0.8%), although they did take 3 seats
from the SNP, and were only 3 votes short of taking Fife North East too.
Without a full analysis it looks as though turnout was down in the vast
majority of the 59 Scottish constituencies. Probably all 18 of the
Northern Irish constituencies saw an increased in turnout. There seem to
have been a few of the 40 Welsh seats seeing a reduction. England, with
533 seats have rather more with negative T/O.
The link above also analyses the results using the probably
redistribution in seats due in 2018. The 650 seats will be reduced to
600. With 600 MPs elected any party will need 301 for a majority. The
Conservatives would have won 298, leaving them short by three. Labour
would have won 245.