poll source               dates administered democrat : mary landrieu republican : john kennedy  lead margin
0                  rasmussen reports                october 21 , 2008                      53%                       43%         10.0
1                  rasmussen reports              september 25 , 2008                      54%                       41%         13.0
2                  rasmussen reports                 august 17 , 2008                      56%                       39%         17.0
3                  rasmussen reports                    july 9 , 2008                      51%                       45%          6.0
4  southern media / opinion research         june 26 - june 28 , 2008                    45.8%                     40.3%          5.5
5                  rasmussen reports                    may 28 , 2008                      47%                       44%          3.0
6                      mellman group           may 17 - may 20 , 2008                      49%                       33%         16.0
7  southern media / opinion research        march 26 - april 9 , 2008                      50%                       38%         12.0
8                         survey usa  december 6 - december 10 , 2007                      46%                       42%          4.0
9                zogby international               november 29 , 2007                      38%                       45%          7.0

Table as JSON:
{"poll source":{"0":"rasmussen reports","1":"rasmussen reports","2":"rasmussen reports","3":"rasmussen reports","4":"southern media \/ opinion research","5":"rasmussen reports","6":"mellman group","7":"southern media \/ opinion research","8":"survey usa","9":"zogby international"},"dates administered":{"0":"october 21 , 2008","1":"september 25 , 2008","2":"august 17 , 2008","3":"july 9 , 2008","4":"june 26 - june 28 , 2008","5":"may 28 , 2008","6":"may 17 - may 20 , 2008","7":"march 26 - april 9 , 2008","8":"december 6 - december 10 , 2007","9":"november 29 , 2007"},"democrat : mary landrieu":{"0":"53%","1":"54%","2":"56%","3":"51%","4":"45.8%","5":"47%","6":"49%","7":"50%","8":"46%","9":"38%"},"republican : john kennedy":{"0":"43%","1":"41%","2":"39%","3":"45%","4":"40.3%","5":"44%","6":"33%","7":"38%","8":"42%","9":"45%"},"lead margin":{"0":10.0,"1":13.0,"2":17.0,"3":6.0,"4":5.5,"5":3.0,"6":16.0,"7":12.0,"8":4.0,"9":7.0}}