Environics Focus Ontario 1998-4

Environics Focus Ontario (EFO) is a regular public opinion survey of Ontario residents which has been in the field since the 1986. EFO includes items which tap Canadian partisan loyalties.安大略省环境焦点调查（Environics Focus Ontario, EFO）是一项面向安大略省居民的常规民意调查项目，自1986年起开展至今。该调查涵盖了用于测量加拿大民众党派忠诚度的相关问卷条目。