This measure was designed to impose a carbon emission tax on certain fossil fuels and fossil-fuel-generated electricity, reduce the sales tax by one percentage point, increase a low-income exemption, and reduce certain manufacturing taxes.
Source for Popular Vote data: Washington Secretary of State. November 8, 2016 General Election Results, Washington Secretary of State (http://results.vote.wa.gov/results/20161108/) (accessed 05 Dec 2016)