From the summary:
State governments have had to make tough budget choices in recent years. Tax revenues have stagnated as a result of the poor economy, and that has prompted governors to take a variety of fiscal actions to close large budget gaps. Some governors have cut spending to balance their budgets, while others have pursued large tax increases.
That is the backdrop to this 10th biennial fiscal report card of the governors, which examines state budget actions since 2008. It uses statistical data to grade the governors on their taxing and spending records — governors who have cut taxes and spending the most receive the highest grades, while those who have increased taxes and spending the most receive the lowest grades.