|
Really quite predictable redux "It's what you learn after you
know it all that counts." -Earl
Weaver, former MLB manager Adjusting his model after missing the turnout in Pennsylvania
by over 38% and by over 37% in Indiana, Poblano of fivethirtyeight.com confidently predicted
Hillary Clinton would win West Virginia by "39
points, 105,000 votes."
Hillary Clinton won by 41 points and she out
polled Barack Obama by over 147,000 votes, making Poblano's prediction of a 105,000 vote
win off by over 40%.
| WV |
Projection
|
Actual
|
Difference |
|
| Clinton |
181,513 |
239,062 |
+57,549 |
| Obama |
79,944 |
91,652 |
+11,708 |
| Edwards |
10,769 |
26,076 |
+15,307 |
|
| Total |
272,226 |
356,790 |
+84,564 |
Poblano's new model not only underestimated the actual turnout by over 84,000
votes, it also underestimated votes for Clinton by over 31%, votes for Obama by over 14%,
and votes for Edwards by over 42%. As for Poblano's snark, our West Virginia poll was
closer to predicting the final results for Clinton, Obama, and Edwards, even with 6% undecided. --Dick Bennett
May 16, 2008 - Kentucky Democratic Primary
Preference
| Kentucky
|
| Democrats |
May 14-15 |
|
| Clinton |
65% |
| Obama |
29% |
| Someone else* |
4% |
| Undecided |
2% |
| * John Edwards and "uncommitted" are on the ballot in Kentucky - both lines
are combined here |
Hillary Clinton leads Barack Obama 56% to 38% among men (45% of
likely Democratic primary voters). Among women, Clinton leads
72% to 21%. Clinton leads 73% to 21% among
white voters (87% of likely Democratic primary voters). Obama
leads 91% to 7% among African American
voters (11% of likely Democratic
primary voters). Clinton leads 59% to 35%
among voters
age 18 to 49 (46% of likely Democratic primary voters) and
Clinton leads 71% to 23% among voters
age 50 and older. 12% of likely Democratic
primary
voters say they would never vote for Hillary Clinton in the
primary and 50% of likely Democratic
primary voters say they would never vote for Barack Obama in
the primary. For details, click on the R or
D for each state in the column on the left under 2008
Presidential Polls.
May 16, 2008 - Oregon Democratic Primary
Preference
| Oregon
|
| Democrats |
May 14-16 |
|
| Clinton |
45% |
| Obama |
50% |
| Undecided |
5% |
Barack Obama leads Hillary Clinton 57% to 39% among men (48%
of
likely Democratic primary voters). Among women, Clinton leads
51% to 44%. Obama leads 51% to 44% among
white voters (88% of likely Democratic primary voters). Clinton
leads 50% to 46% among Hispanic
voters (6% of likely Democratic
primary voters). Obama leads 55% to 38%
among voters
age 18 to 49 (49% of likely Democratic primary voters) and
Clinton leads 52% to 45% among voters
age 50 and older.
Clinton and Obama are tied at 49%
each among voters saying they have returned their ballots (58% of likely Democratic primary
voters) and Obama leads 52% to 40% among voters saying they will definitely return their ballots
by May 20th. 20% of likely Democratic
primary
voters say they would never vote for Hillary Clinton in the
primary and 22% of likely Democratic
primary voters say they would never vote for Barack Obama in
the primary. For details, click on the R or
D for each state in the column on the left under 2008
Presidential Polls.
A Surprise About Obama, Clinton, and Turnout
Conventional wisdom has it that Barack Obama's
primary victories are based on his ability to increase turnout.
A look at what happens when voter turnout increases
in the primaries proves that this notion is wrong. In fact, Obama has had his greatest primary (and caucus)
victories when turnouts have been low.
Obama received 66% of the primary
vote in Georgia when 22.7% of all registered voters in the state voted in the Democratic primary.
In Virginia, Obama received 64% of the primary vote when 21.1% of all registered voters in
the state voted in the Democratic primary. In Mississippi, Obama received 61% of the primary
vote when 24.4% of all registered voters in the state voted in the Democratic primary.
Hillary Clinton received 67%
of the primary vote in West Virginia when 30.1% of all registered voters in the state voted
in the Democratic primary. In Pennsylvania, Clinton received 55% of the vote when 27.7% of
all registered voters in the state voted in the Democratic primary. In Ohio, Clinton received
54% of the primary vote when 30.5% of all registered voters in the state voted in the primary.
There are exceptions (such as Arkansas, Tennessee,
and Rhode Island), but Clinton, and not Obama, tends to win in the states where turnouts are
higher. The relationship is strong enough that Democratic primary turnout can be predicted
using Clinton's share of the vote.
--Dick Bennett
May 9, 2008 - West Virginia Democratic Primary
Preference
| West Virginia
|
| Democrats |
May 7-8 |
|
| Clinton |
66% |
| Obama |
23% |
| Someone else |
5% |
| Undecided |
6% |
Hillary Clinton leads Barack Obama 57% to 27% among men (43% of
likely Democratic primary voters). Among women, Clinton leads
72% to 20%. Clinton leads 70% to 19% among
white voters (93% of likely Democratic primary voters). Obama
leads 91% to 3% among African American
voters (5% of likely Democratic
primary voters). Clinton leads 61% to 27%
among voters
age 18 to 49 (47% of likely Democratic primary voters) and
Clinton leads 72% to 19% among voters
age 50 and older. 13% of likely Democratic
primary
voters say they would never vote for Hillary Clinton in the
primary and 45% of likely Democratic
primary voters say they would never vote for Barack Obama in
the primary. For details, click on the R or
D for each state in the column on the left under 2008
Presidential Polls.
The model got it right?
Mark Blumenthal of Pollster.com declares in
his weekly column
for NationalJournal.com that the regression
model
developed by Poblano of fivethirtyeight.com correctly predicted the 2-point margin in the Democratic
presidential primary results from Indiana.
But, surprisingly, Mark fails to look at the projections on
which the margin was based. Those projections clearly show, as was the case for Pennsylvania,
that the model failed to come close to accurately predicting the actual turnout.
| IN |
Projection
|
Actual
|
Difference |
|
| Clinton |
471,946 |
642,940 |
+170,994 |
| Obama |
453,688 |
629,031 |
+175,343 |
|
| Total |
925,634 |
1,271,971 |
+346,337 |
The model underestimated the actual turnout
by over 37% (it was off by over 38% in Pennsylvania) and the difference over the actual by
candidate has Obama up 4,349 votes over Clinton.
We will never know what the projected margin
would have been if the model accurately predicted the turnout, but looking at the difference
by candidate suggests it would have underestimated the vote for Obama.
The model was wrong, but it happened to get
the 2-point margin right. Poblano's models continue to fail at something she or he confidently
claims to be "really quite predictable"
- this time by 346,337 votes.
--Dick Bennett
April 21, 2008
| Bush Job Approval Ratings
|
| 4/19/08 |
Approve |
Disapprove |
Undecided |
|
| Overall |
22% |
72% |
6% |
| Economy |
22% |
73% |
5% |
George W. Bush's overall job approval rating is holding steady
at 22% while 68% of Americans say the national economy is in a recession and 54% say their
personal financial situations are getting worse. Details
from the nationwide survey conducted April 16-19 are available
at The National Economy.
ARG's
Electoral Vote Calculator has been updated to reflect the 2004
results.
Assign states to the Republican or Democrat for
2008 and watch it calculate the electoral
votes for president at
Electoral Vote Calculator.
Why
doesn't most advertising work? Take a look at
10 Rules for More Effective Advertising.
See
your out-of-conscious
processing system at work and learn how to improve your marketing
and advertising efforts by
understanding the power behind the Scintillating
Grid.
The
margins of error reported for
most polls underestimate the actual margins of error for ballot
estimates from the same samples.
Use the Ballot Lead Calculator
to determine if the lead for any survey
is statistically significant.
The New Hampshire Poll:
Results
from the March 2008 Quarterly New Hampshire Poll are available
at The
New Hampshire Poll. NH
residents rate NH business conditions, their personal finances,
John Lynch,
and George
W. Bush. |