The National Institute on Money in State Politics provides this "free, nonpartisan, verifiable archive of contributions to political campaigns in all 50 states", with an extensive range of searchable data and reports.
This is both a news site and an annual conference, which is very informative on state and regional policy issues. “State of Reform is a stakeholder-driven initiative that tries to bridge the gap between the worlds of health care and health policy. We try to develop vehicles for the dissemination of information, case studies, best practices, strategic insight, and lessons learned.”
This non-partisan public research group is based in Olympia, and was formed in 1983. They produce reports on a range of topics:
Criminal justice: Adult corrections
Criminal justice: Juvenile justice