What effect will the 1992 Republican convention have on the opinion polls?
A profile of George Gallup, the inventor of the Gallup poll.
David Cowling looks at the track record of polls in previous British elections.
Exploring the past, present and future of opinion polling
The achievements of George Gallup, inventor of the Gallup poll of public opinion.
Alistair Cooke remembers George Gallup, the creator of the scientific polling method.
Vice-presidential debate could sway public opinion on main candidate.
Alistair Cooke reflects on the opinion poll discoveries of George H Gallup.
How a 'close contest' turned into a landslide.