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POLITICS SYMPOSIUM
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Economic Pessimism and Political
Punishment in 2020
Brad Lockerbie, East Carolina University
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E
lection forecasting is fraught with peril. How-
ever, if instead of being like political pundits, we
provide our model of election outcomes and the
data, it is possible to assess the statistical accur-
acy of our model and move beyond simple
atheoretical correlations.
We should strive to have a forecast with a long lead time. If
an announcer predicts the winner of a football game with less
than a minute to go, we care very little about the forecast’s
accuracy. If a forecast is made before the game begins and is
just as accurate, we would be quite interested. Actors who are
dependent on the outcome of the election can modify their
strategy and behavior if the forecast is provided well before the
election.
1
INFLUENCES ON ELECTION OUTCOMES
Because there are many variables available, it would be impos-
sible to include them all: we have to trim their number down.
We can have some sense of election outcomes by looking at the
state of the economy. The voting behavior literature is rich
with economic models of voting behavior. Because there are so
few cases, and because the retrospective and prospective items
are so highly correlated (.86), I follow Fiorina (1981), Lewis-
Beck (1988), Lewis-Beck and Whitten (2013), Lockerbie (2008;
2016), and Nadeau, Lewis-Beck, and Bélanger (2013), whose
forecasts focus on economic expectations. As with the earlier
models, I make use of the item from table 8 of the Survey of
Consumer Attitudes and Behavior. The score is the average of
the responses in the negative for the second quarter of the
election year to this question: “Now looking ahead—do you
think you (and your family living there) will be better off or
worse off financially a year from now, or about the same?”
2
Given that this item lacks attribution to the parties, it should
only serve to understate the relationship between economics
and the election outcome, because one could believe that one’s
financial situation will change regardless of the election.
Moreover, one might think that the opposition party will
win, which would improve one’s economic condition. This
model would take expectation to indicate support for the
incumbent party. Again, this should serve to understate the
relationship between prospective economic evaluations and
electoral outcomes.
3
There are also some noneconomic patterns related to
election outcomes. Abramowitz (2000) has noted the desire
of the public to change parties in the White House after one
party has controlled it for two terms.
4
An incumbent party
returning for a third term without the same candidate running
for reelection is a rarity in American politics. To account for
the diminished support for the incumbent party, I make use of
the log of time a party has controlled the presidency.
PRESIDENTIAL ELECTION RESULTS
Table 1 shows the presidential election model.
5
The results of
this iteration are similar to those of earlier years. The more
pessimistic people are, the more likely the incumbent party is
defeated. The incumbent party loses slightly more than one-
half percentage point of the vote for each percentage point
increase in pessimism. As expected, there is a negative rela-
tionship between the length of time a party has controlled the
White House and its share of the vote.
To assess the utility of this model, I use out-of-sample
equations.
6
The average absolute error is 2.70 percentage
points. The two independent variables are significant at the
.01 level or better in every equation. The equation has success-
fully predicted the outcome in every election, except in 1960
and 1968; Nixon was forecast to win in 1960 and lose in 1968. In
2000 and 2016, the equation did forecast the actual popular
vote winner. For the Democrats, alas, the popular vote and the
electoral vote majority were not in agreement.
What does this say for 2020? Even with the atypical
political climate resulting from the COVID-19 pandemic and
President Trump’s rhetoric, I believe that the model will
successfully forecast the outcome of the 2020 election. There
is anxiety over the state of the economy, but the public is only
modestly more pessimistic than usual. Over the period of the
study, the mean level of pessimism is 11.64%. In 2020, the level
of pessimism is 12%. Additionally, despite Donald Trump’s
tendency to raise hackles, the Republicans have had the White
House for only four years. If the model is accurate, with these
tenuous circumstances, its strength and precision will be
evident. The forecast is a comfortable victory (more than
55% of the two-party vote) for the Republicans. Given that
the standard error of the estimate is 2.92 and the forecast is
that the Republicans win more than 55% of the vote, using the
t-distribution, the estimated probability of the Republicans
getting more than 50% of the vote is 95%. If one looks at the
out-of-sample errors, there has only been one forecast error
greater than 5.17 points. This translates to a .94 probability
that the Republicans will win the popular vote.
US HOUSE ELECTIONS RESULTS
The same model, with one addition, can be used to forecast the
seat change in the House of Representatives. The addition is
the inclusion of a variable that accounts for incumbency;
doi:10.1017/S1049096520001444
© The Author(s), 2020. Published by Cambridge University Press on behalf of the American
Political Science Association PS • 2020 1