Mathematical Model Predicts Obama Win by Ten Points

Facts matter: Sign up for the free Mother Jones Daily newsletter. Support our nonprofit reporting. Subscribe to our print magazine.


Emory political science professor Alan Abramowitz seems to have a mathematical election model that works. Abramowitz’s system has correctly predicted the popular vote winner within two percentage points for every presidential election since 1988. This year, it’s predicting an Obama win: 54.3 percent, versus McCain’s 45.7 percent.

The model isn’t perfect, of course, but it does factor in a wide range of variables such as GDP, a party’s time in office, and recent polls. “While factors outside of the model, such as rising partisan polarization and resistance to an African American candidate by some white voters may result in a somewhat smaller popular vote margin for the Democratic nominee,” Abramowitz writes, “the combination of an unpopular Republican incumbent in the White House, a weak economy, and a second-term election make a Democratic victory in November all but certain.”

If you’re skeptical of models, check out the Iowa Electronic Market‘s trading index for the presidential election. For decades, it’s been a much better predictor of presidential wins than Gallup polls. As of today, the market’s predicting a 54 percent win for the Democrats, versus 45 percent for the Republicans. it could be a coincidence that those numbers are so close to Abramowitz’s, or it could be that investors are reacting to his model’s predictions. A third option: it could be that Obama actually is going to win by ten points.

THE TRUTH...

is the first thing despots go after. An unwavering commitment to it is probably what draws you to Mother Jones' journalism. And as we're seeing in the US and the world around, authoritarians seek to poison the discourse and the way we relate to each other because they can't stand people coming together around a shared sense of the truth—it's a huge threat to them.

Which is also a pretty great way to describe Mother Jones' mission: People coming together around the truth to hold power accountable.

And right now, we need to raise about $400,000 from our online readers over the next two months to hit our annual goal and make good on that mission. Read more about the information war we find ourselves in and how people-powered, independent reporting can and must rise to the challenge—and please support our team's truth-telling journalism with a donation if you can right now.

payment methods

THE TRUTH...

is the first thing despots go after. An unwavering commitment to it is probably what draws you to Mother Jones' journalism. And as we're seeing in the US and the world around, authoritarians seek to poison the discourse and the way we relate to each other because they can't stand people coming together around a shared sense of the truth—it's a huge threat to them.

Which is also a pretty great way to describe Mother Jones' mission: People coming together around the truth to hold power accountable.

And right now, we need to raise about $400,000 from our online readers over the next two months to hit our annual goal and make good on that mission. Read more about the information war we find ourselves in and how people-powered, independent reporting can and must rise to the challenge—and please support our team's truth-telling journalism with a donation if you can right now.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate