poll source               date administered      democrat   republican  lead margin
0               reuters / zogby  october 31 - november 3 , 2008  barack obama  john mccain          0.0
1  rasmussen reports / fox news               november 2 , 2008  barack obama  john mccain          0.0
2         public policy polling  october 31 - november 2 , 2008  barack obama  john mccain          0.8
3               reuters / zogby  october 30 - november 2 , 2008  barack obama  john mccain          1.7
4                    survey usa  october 30 - november 2 , 2008  barack obama  john mccain          0.0

Table as JSON:
{"poll source":{"0":"reuters \/ zogby","1":"rasmussen reports \/ fox news","2":"public policy polling","3":"reuters \/ zogby","4":"survey usa"},"date administered":{"0":"october 31 - november 3 , 2008","1":"november 2 , 2008","2":"october 31 - november 2 , 2008","3":"october 30 - november 2 , 2008","4":"october 30 - november 2 , 2008"},"democrat":{"0":"barack obama","1":"barack obama","2":"barack obama","3":"barack obama","4":"barack obama"},"republican":{"0":"john mccain","1":"john mccain","2":"john mccain","3":"john mccain","4":"john mccain"},"lead margin":{"0":0.0,"1":0.0,"2":0.8,"3":1.7,"4":0.0}}