If your criteria is following the Constitution and promoting liberty and prosperity, the five best are:
1)George Washington
2)Grover Cleveland
3)Calvin Coolidge
4)James Monroe
5)Ronald Reagan
The five worst are:
36. Jimmy Carter
37. George W. Bush
38. Richard M. Nixon
39. Woodrow Wilson
40. Lyndon B. Johnson
Note: Obama was not in the survey. FDR was number 35.
As something of an amateur historian, I agree wholeheartedly with these results, although I might quibble here and there with some placements. For example, I am not convinced Reagan should be rated above Thomas Jefferson. But in general, yes, this is the way I see things.