poll source                  dates administered democrat : mark begich republican : ted stevens  lead maragin
0                rasmussen reports                   october 28 , 2008                    52%                      44%             8
1                rasmussen reports                    october 6 , 2008                    48%                      49%             1
2              ivan moore research            september 20 - 22 , 2008                    48%                      46%             2
3        daily kos / research 2000  september 15 - september 17 , 2008                    50%                      44%             6
4                rasmussen reports                  september 9 , 2008                    48%                      46%             2
5                moore information              september 2 - 3 , 2008                    46%                      44%             2
6              ivan moore research      august 30 - september 2 , 2008                    49%                      46%             3
7              ivan moore research                august 9 - 12 , 2008                    56%                      39%            17
8              ivan moore research                 july 30 - 31 , 2008                    56%                      35%            21
9                rasmussen reports                      july 30 , 2008                    50%                      37%            13
10             ivan moore research                 july 18 - 22 , 2008                    51%                      43%             8
11               rasmussen reports                      july 17 , 2008                    52%                      44%             8
12       research 2000 / daily kos                 july 14 - 16 , 2008                    47%                      45%             2
13               rasmussen reports                      june 16 , 2008                    44%                      46%             2
14               rasmussen reports                       may 14 , 2008                    47%                      45%             2
15                   research 2000                  may 12 - 14 , 2008                    48%                      43%             5
16  hellenthal & associates , dscc                   may 6 - 10 , 2008                    51%                      44%             7
17               rasmussen reports                      april 7 , 2008                    45%                      46%             1
18                   research 2000               december 3 - 6 , 2007                    47%                      41%             6

Table as JSON:
{"poll source":{"0":"rasmussen reports","1":"rasmussen reports","2":"ivan moore research","3":"daily kos \/ research 2000","4":"rasmussen reports","5":"moore information","6":"ivan moore research","7":"ivan moore research","8":"ivan moore research","9":"rasmussen reports","10":"ivan moore research","11":"rasmussen reports","12":"research 2000 \/ daily kos","13":"rasmussen reports","14":"rasmussen reports","15":"research 2000","16":"hellenthal & associates , dscc","17":"rasmussen reports","18":"research 2000"},"dates administered":{"0":"october 28 , 2008","1":"october 6 , 2008","2":"september 20 - 22 , 2008","3":"september 15 - september 17 , 2008","4":"september 9 , 2008","5":"september 2 - 3 , 2008","6":"august 30 - september 2 , 2008","7":"august 9 - 12 , 2008","8":"july 30 - 31 , 2008","9":"july 30 , 2008","10":"july 18 - 22 , 2008","11":"july 17 , 2008","12":"july 14 - 16 , 2008","13":"june 16 , 2008","14":"may 14 , 2008","15":"may 12 - 14 , 2008","16":"may 6 - 10 , 2008","17":"april 7 , 2008","18":"december 3 - 6 , 2007"},"democrat : mark begich":{"0":"52%","1":"48%","2":"48%","3":"50%","4":"48%","5":"46%","6":"49%","7":"56%","8":"56%","9":"50%","10":"51%","11":"52%","12":"47%","13":"44%","14":"47%","15":"48%","16":"51%","17":"45%","18":"47%"},"republican : ted stevens":{"0":"44%","1":"49%","2":"46%","3":"44%","4":"46%","5":"44%","6":"46%","7":"39%","8":"35%","9":"37%","10":"43%","11":"44%","12":"45%","13":"46%","14":"45%","15":"43%","16":"44%","17":"46%","18":"41%"},"lead maragin":{"0":8,"1":1,"2":2,"3":6,"4":2,"5":2,"6":3,"7":17,"8":21,"9":13,"10":8,"11":8,"12":2,"13":2,"14":2,"15":5,"16":7,"17":1,"18":6}}