WINNER: An ebullient David Cameron emerges from Parliament on Monday with new Conservative Party MPs after his party won a surprise electoral victory last week that proved pollsters wrong.
WINNER: An ebullient David Cameron emerges from Parliament on Monday with new Conservative Party MPs after his party won a surprise electoral victory last week that proved pollsters wrong. WPA Pool Getty Images
WINNER: An ebullient David Cameron emerges from Parliament on Monday with new Conservative Party MPs after his party won a surprise electoral victory last week that proved pollsters wrong. WPA Pool Getty Images

Learning from errors of pollsters

May 11, 2015 5:50 PM