Hawaii Appleseed, March 2017. This report summarizes findings from the Hawai‘i Appleseed Center for Law & Economic Justice and QMark Research poll conducted in 2016. A total of 503 telephone surveys (both landline and mobile telephones) of Hawai‘i residents were completed, assigned proportionally based on population estimates of adults on each of the major Hawaiian island.
http://hitaxfairness.org/wp-content/uploads/2017/03/EITC-poll-report.pdf