Voter
behavior influenced by hot weather
Political rebellions and riots have been associated with warmer
weather, but until now, there has been little research on its potential
influence on peaceful and democratic political behavior.
A new study, published in the open-access journal Frontiers in Psychology, has uncovered a connection between changes in temperature and voting behavior in the United States of America.
A new study, published in the open-access journal Frontiers in Psychology, has uncovered a connection between changes in temperature and voting behavior in the United States of America.
"We found that increases in state-level temperatures from
one election to another are related to increases in state-level voter turnout,
and increases in votes for the incumbent party," says Jasper Van Assche,
who completed this research in the Department of Developmental, Personality and
Social Psychology at Ghent University, Belgium.
"Voter behavior data from each state was collected for all the U.S. presidential elections from 1960 to 2016 and compared to the difference between maximum temperature on voting day and that of the previous election day," explains Van Assche. "We found that for every 10C increase in temperature, voter turnout increased by 1.4%."
The study also revealed that a rise in temperature motivated
some citizens to cast their vote for the smaller political parties (Greens,
Libertarians, Independents). Counteracting this, was the finding that warmer
weather was a stronger motivator for some citizens to vote for the government
currently in power.
"Although these effects are rather small compared to the
'usual suspects' that predict voting, they might play a role in close
races," says Van Assche.
The study details one such case; the 2000 presidential election.
Applying the findings of the study, Van Assche and his co-authors suggests a
mere 10C (1.8oF) increase in temperature may have made Al Gore the 43rd U.S.
President instead of George W. Bush, as Gore would have won in Florida.
Van Assche is keen to explain that his results were not affected
by other factors that can influence voter behavior.
"Importantly, the relationship between voter behavior and
turnout remained true even when we took into account the 'usual suspects' that
can have an effect -- the president being available for reappointment, the
incumbent president being elected or not (Presidents Lyndon Johnson and Gerald
Ford were Vice Presidents), presidential approval ratings, whether the
president's party had a majority in Congress during the two last years, and
change in state gross domestic product (GDP), amongst others."
The study analyzed changes in temperature (an increase or
decrease in temperature on voting day, when compared to the previous election
day), rather than absolute temperature because of the latter's potential
effects on the results. An absolute temperature of 30oC would be a normal
temperature for California, but hot in Alaska.
Moreover, absolute temperature can be linked to other factors that may affect voting behavior. For example, poverty is generally higher in countries with hotter climates.
Moreover, absolute temperature can be linked to other factors that may affect voting behavior. For example, poverty is generally higher in countries with hotter climates.
It is hoped that future studies will delve deeper and increase
our knowledge of what can influence voter behavior.
"There is a large amount of research on voter behavior, but
little attention has been paid to the seemingly illogical factors that can
influence the way people vote. Future studies could expand our understanding by
tapping into smaller levels of analyses (e.g., cities or counties) or by
including emotions (such as anger) which might explain some of the
effects," concludes Van Assche.