acnielsen alf landon andrew jackson angus reid strategies australia bandwagon effect british polling council canada census census in the united kingdom confidence interval crikey deliberative opinion poll egypt enfield enterprise feedback management european survey research association exit poll fairfax media galaxy research gallup gallup poll general social survey george gallup gfk nop international social survey programme internet ipsos-reid iraq john quincy adams level of measurement literary digest louis harris margin of error market research michael portillo missouri bellwether noi poll national opinion research center newspoll nielsen ratings nigeria ochlocracy pew research center poll average postcards psychometrics public opinion push poll questionnaire racism response bias roy morgan research saddam hussein safe seat sampling error selection bias sexism shy tory factor spiral of silence statistical hypothesis testing statistical survey statistics stephen twigg straw poll structured interview survey sampling tactical voting television network the australian the gallup organization the times united kingdom united states united states census vciom variable winston churchill woodrow wilson yougov zogby zogby international