Leonard G. Dennis was a Reconstruction-era political boss in Alahuca County, Florida, best known for his role in throwing the 1876 presidential election to the Republican candidate, Rutherford B. Hayes. Dennis became one of the wealthiest men in the north central Florida by selling his endorsements to the highest bidders and then taking a "commission" from the monthly salary of each. In order to secure the cooperation of his appointees, he kept a signed letter of resignation from each applicant before he granted the office.