It's a poll (in PowerPoint format) conducted by
The Washington Poll, a non-partisan University of Washington-sponsored survey research project. It surveyed 600 registered voters across Washington state, and has a 4% margin of error. Here is the
link, bur for those who don't have PowerPoint on their computers, here are the (relevant) results from one of the slides:
Gregoire State LegislatureStrongly Approve 25% 8%
Somewhat Approve 38% 52%
Somewhat Disapprove 14% 15%
Strongly Disapprove 16% 8%
Don't Know 5% 15%