The Book of States 2012 from The Council of State Governments.
Fast facts and stats about all 50 states in this online almanac. Material is organized into the following chapters. Most info is available in both PDF and XLS formats.
Chapter 1 » State Constitutions
Chapter 2 » Federalism and Intergovernmental Relations
Chapter 3 » State Legislative Branch
Chapter 4 » State Executive Branch
Chapter 5 » State Judicial Branch
Chapter 6 » Elections
Chapter 7 » State Finance
Chapter 8 » State Management and Administration
Chapter 9 » Selected State Policies and Programs
Chapter 10 » State Pages
Hat Tip/Thanks to Shirl Kennedy from FullTextReports.com for the tip.