| Don't
Count On Polls
by David Keene
Is
President Bush ahead by 13 points, as one poll suggested last week,
or is the race a dead heat? The experts don't seem to know, and
one can sympathize, given the chaotic nature of polling these days,
but casual observers and those following the race for the presidency
have to be totally confused by this point.
It does seem
clear that while Sen. John Kerry failed to get the "bounce"
he needed from his convention, Bush did get one from the show his
people put on in New York.
The question
is whether his "bounce" explains the lead some say he
now enjoys or whether something else is happening. The answer is
that he did accomplish what he needed to accomplish in New York
and is running against an opponent who just doesn't seem to be able
to get his act together.
Having said
this, it would be foolish and inaccurate to assume Bush enjoys anything
approaching a double-digit lead at this point. The nation remains
fairly evenly divided, and while it is possible that the thus-far
ineptly run Kerry campaign will lose by a bigger margin than some
expect, no one should bet on that happening.
The polls are
all over the place for a variety of reasons. Polling is getting
more and more difficult because it is harder in today's world for
pollsters to draw a reliably random sample with literally millions
of Americans using cellular rather than regular phones and more
than ever refusing to cooperate with pollsters who do manage to
reach them.
These problems
have, of course, been widely reported, as pollsters and those who
rely on their work whine about the difficulty of getting really
accurate results or try to explain why one poll differs so much
from another taken during roughly the same time period and seeking
answers to virtually identical questions.
What most of
us who pore over the results of every poll that appears often fail
to realize is that political and other surveys are only scientific
to a point. Any student of public-opinion research can theoretically
draw a random sample, but such a sample isn't particularly useful
in gauging how people who will actually vote on Election Day feel
or will act.
To get this
information, the pollster has to look at the demographic and partisan
makeup of the sample drawn to see how it stacks up against the actual
electorate.
Thus, if the
sample contains too many more Republicans, women or minorities than
the electorate, the pollster usually adjusts by weighting the opinions
of some respondents differently than others or goes back and tries
to adjust for the differences in other ways.
Sometimes this
works, and sometimes it doesn't.
But that's only
part of the problem. The real problems come when pollsters try to
"screen" for "likely" voters, those who we can
be pretty sure will vote Nov. 2. There is no scientific way to do
this, so pollsters look to history by seeking respondents who have
voted in past elections, rely on the respondents' expressed intention,
and use guesswork.
It is the guesswork
that is a problem. The pollster has to develop a screen that takes
into account the nature of the campaign, the intensity on each side
and the relative motivation of different demographic and other groups
in the electorate. It's easy to guess wrong at this point, and being
wrong can make a huge difference.
This year, both
parties are mounting get-out-the-vote efforts unlike any we have
seen. If one of the parties does better than the other in dragging
its voters out on Election Day, the outcome could differ substantially
from predictions and the candidate behind on the eve of the election
could win. Other external events not associated with the campaigns
themselves could also affect this.
Everyone involved
on both sides assumes Florida, for example, will be almost as close
as it was four years ago, and each side has worked to put together
a ground army in that crucial state to deliver on Election Day.
Their troops, however, have just managed to survive a series of
horrendous hurricanes that have disrupted everything in crucial
parts of the state. Both campaigns must now wonder whether people
they have been counting on who have been traumatized by what's gone
on down there will perform as they've hoped.
The answers
to these questions cannot be answered by Gallup or any other pollster.
What a combined
look at the polls and the other evidence we have indicates is that
this is a close race and will be decided by the people who actually
turn out Nov. 2.
It's trite to
observe, as politicians who find themselves behind are wont to do,
that the only real poll that matters is the one in which people
vote on Election Day, but this year that couldn't be truer.
David
Keene is chairman of the American Conservative Union and a Washington-based
government affairs consultant.
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