MONTERREY, Mexico--(BUSINESS WIRE)--Fitch Ratings has affirmed State of Guanajuato's ratings as follows: --Long-term local currency Issuer Default Ratings (IDR) at 'BBB+'; --Long-term National Rating at 'AA+(mex)'. The Rating Outlook is Stable. The rating action reflects Guanajuato's high operating margins and its conservative debt policy. It also considers Fitch's expectation that the state will continue with its budgetary discipline. KEY RATING DRIVERS Guanajuato's rating reflects its solid o