A New study conducted by from researchers at the University of Hong Kong and Indiana University estimates that corruption on the state level is costing American tax payers tens of billions of dollars per year.

The researchers studied more than 25,000 convictions of public officials for violation of federal corruption laws between 1976 and 2008 as well as patterns in state spending to develop a corruption index that estimates the most and least corrupt states in the union. Using this methodology here is their list of the 10 most corrupt states.

1. Mississippi
2. Louisiana
3. Tennessee
4. Illinois
5. Pennsylvania
6. Alabama
7. Alaska
8. South Dakota
9. Kentucky
10. Florida

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