Be aware that you can also track down information on each state's government website. A simple Google search for the state you are looking for + a specific governmental agency or department should give you the results you need.
Stateline.org
Political and policy news from all 50 states. Stateline.org is a nonprofit, nonpartisan online news site that practices journalism in the public interest by reporting on emerging trends and issues in state policy and politics.
Government Performance Project: The Pew Center on the States
The Government Performance Project conducts extensive research and analysis to understand how states can better serve the public and its needs.
State Agency Databases
Wiki of state government resources created and maintained by the Government Documents Roundtable (GODORT) of the American Library Association (ALA).
States Perform
States Perform provides users with access to interactive, customizable and up-to-date comparative performance measurement data for 50 states in six key areas: fiscal and economic, public safety and justice, energy and environment, transportation, health and human services, and education.