According to Gallup's presidential approval poll, President Obama enjoyed a 78% approval by Democrats from July 18 - 24, 2011. It has been noted that this is the highest for any Democratic President since Truman at this same time.

Clinton's rating: 77%
Carter's rating: 37%
Johnson's rating: 63%
Kennedy's rating: 77%
Truman's rating: 76%


http://www.huffingtonpost.com/2011/07/27/obama-democratic-voters_n_910895.html