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John Hood: Six trends could shape 2016 elections

RALEIGH — “Prediction is very difficult,” said physicist Niels Bohr, “especially if it’s about the future.” This sounds like a Yogi Berra-style quip. But Bohr was making a serious point about prediction — one that would-be political forecasters ought to take to heart.

If you would predict the future, you must first have formulas or rules of thumb that successfully predict the past. When trying to concoct statistical models to forecast the outcomes of presidential elections, political scientists run dozens, hundreds, or even thousands of simulations of past election cycles. They tweak this variable or add that one, looking for a high rate of success over as many elections as they have enough data to study.

As it happens, there are now pretty good models for presidential elections. While hardly perfect, they do tend to provide useful probabilities for the national popular vote, at least, if not specific state outcomes. The trajectory of the economy in the months leading up to Election Day is a common element of these models. Another is public approval or disapproval of the incumbent president.

For gubernatorial elections like the Pat McCrory-Roy Cooper matchup we’ll likely see here in North Carolina in 2016, however, the available models are rarer and have yet to develop the same level of empirical support. Still, most of the research currently available does suggest that the same sort of variables — such as economic momentum and the approval ratings of incumbent politicians — have some predictive force. Here are six key statistics to watch over the next several months as indicators of which way the North Carolina governor’s race may go:

Governor’s approval rating. During September, four different pollsters tested McCrory’s job approval. Averaging them together yields 42 percent approval to 43 percent disapproval. At this early juncture, however, poll averages are mixing samples of all adults or registered voters (which show more disapproval than approval of McCrory) with samples of likely voters (which show the governor in pretty good shape). Such averages will be more useful as we actually get into the election year.

Presidential approval rating. In North Carolina, President Barack Obama has job-approval numbers in the low 40s, even in samples not adjusted for the likelihood of voting. That’s an unambiguously bad sign for all Democrats on the 2016 ballot, including Cooper.

Employment. Over the past 12 months, North Carolina employers have added some 108,000 net new jobs. The resulting 2.6 percent rate of job creation compares well to the recent past and to job trends in other states.

Unemployment rate. This trend offers better news for Cooper. Over the past 12 months, North Carolina’s “headline” unemployment rate has fallen and then rebounded, ending up the same in September (5.8 percent) as was posted a year ago.

Personal Income. Over the most recent 12-month period, personal income in North Carolina has gone up by 4.7 percent. Again, that’s one of the best growth rates in years.

Gross Domestic Product. Some models use the broadest economic measure of all, GDP, to predict gubernatorial outcomes. In 2014, North Carolina’s GDP grew 1.4 percent after inflation, down from 2.7 percent in 2013. Unlike the other data, however, this statistic is pretty old. If the trend has continued in 2015, that would be bad news for McCrory.

Of these six trends, then, it would be fair to say that three of them — presidential job approval, employment, and personal income — augur well for the Republican incumbent at the moment. The other three — gubernatorial job approval, unemployment rate, and GDP — point the other way.

But the election isn’t next month. It’s a year from now. If by next summer Obama continues to be unpopular in North Carolina, job and income growth continues unabated, and the GDP and unemployment rates converge with the other trends, Pat McCrory will be in good shape. But might the economy take a swoon between now and then? Another physicist, Albert Einstein, offered good advice: “I never think of the future. It comes soon enough.”

John Locke Foundation chairman John Hood is the author of Catalyst: Jim Martin and the Rise of North Carolina Republicans.

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