America’s next top model: predicting the midterm results

Our model, built to predict the outcome of this year’s midterm elections, tips Republicans to take the House and Democrats to retain control of the Senate. The model’s architect discusses how and why he built it, and our polling guru explains why polls matter. Why there’s no nuclear-arms race in Asia—yet. And Egypt wants the Rosetta Stone back, but it’s not that simple.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer