poll source date (s) administered  sample size margin of error mel martinez (r) betty castor (d)
0        zogby international            october 31          600          ± 4.0%              46%              46%
1      quinnipiac university            october 31         1098          ± 3.0%              49%              44%
2   cnn / usa today / gallup            october 28         1138          ± 4.0%              46%              48%
3                mason dixon            october 26          625          ± 4.0%              47%              46%
4             new york times            october 23          802          ± 3.0%              44%              47%
5      quinnipiac university            october 22          944          ± 3.2%              49%              46%
6          insider advantage            october 22          400          ± 5.0%              46%              44%
7                 survey usa            october 22          741          ± 3.7%              47%              50%
8               miami herald            october 19          800          ± 3.5%              44%              44%
9              research 2000            october 18          600          ± 4.0%              48%              48%
10     quinnipiac university            october 15          808          ± 3.5%              47%              47%
11                survey usa            october 15          596          ± 4.1%              49%              47%
12             mason - dixon            october 14          625          ± 4.0%              45%              45%
13                       unf            october 10          641          ± 4.0%              35%              38%
14             mason - dixon             october 4          625          ± 4.0%              46%              41%
15     quinnipiac university             october 1          706          ± 3.8%              48%              47%
16                survey usa             october 1          706          ± 3.8%              50%              46%
17                    gallup               sept 18          674          ± 4.0%              45%              51%
18     quinnipiac university               sept 18          819          ± 3.4%              42%              43%
19                survey usa               sept 12          602          ± 4.1%              45%              49%
20         rasmussen reports             august 24          500          ± 4.5%              44%              44%

Table as JSON:
{"poll source":{"0":"zogby international","1":"quinnipiac university","2":"cnn \/ usa today \/ gallup","3":"mason dixon","4":"new york times","5":"quinnipiac university","6":"insider advantage","7":"survey usa","8":"miami herald","9":"research 2000","10":"quinnipiac university","11":"survey usa","12":"mason - dixon","13":"unf","14":"mason - dixon","15":"quinnipiac university","16":"survey usa","17":"gallup","18":"quinnipiac university","19":"survey usa","20":"rasmussen reports"},"date (s) administered":{"0":"october 31","1":"october 31","2":"october 28","3":"october 26","4":"october 23","5":"october 22","6":"october 22","7":"october 22","8":"october 19","9":"october 18","10":"october 15","11":"october 15","12":"october 14","13":"october 10","14":"october 4","15":"october 1","16":"october 1","17":"sept 18","18":"sept 18","19":"sept 12","20":"august 24"},"sample size":{"0":600,"1":1098,"2":1138,"3":625,"4":802,"5":944,"6":400,"7":741,"8":800,"9":600,"10":808,"11":596,"12":625,"13":641,"14":625,"15":706,"16":706,"17":674,"18":819,"19":602,"20":500},"margin of error":{"0":"± 4.0%","1":"± 3.0%","2":"± 4.0%","3":"± 4.0%","4":"± 3.0%","5":"± 3.2%","6":"± 5.0%","7":"± 3.7%","8":"± 3.5%","9":"± 4.0%","10":"± 3.5%","11":"± 4.1%","12":"± 4.0%","13":"± 4.0%","14":"± 4.0%","15":"± 3.8%","16":"± 3.8%","17":"± 4.0%","18":"± 3.4%","19":"± 4.1%","20":"± 4.5%"},"mel martinez (r)":{"0":"46%","1":"49%","2":"46%","3":"47%","4":"44%","5":"49%","6":"46%","7":"47%","8":"44%","9":"48%","10":"47%","11":"49%","12":"45%","13":"35%","14":"46%","15":"48%","16":"50%","17":"45%","18":"42%","19":"45%","20":"44%"},"betty castor (d)":{"0":"46%","1":"44%","2":"48%","3":"46%","4":"47%","5":"46%","6":"44%","7":"50%","8":"44%","9":"48%","10":"47%","11":"47%","12":"45%","13":"38%","14":"41%","15":"47%","16":"46%","17":"51%","18":"43%","19":"49%","20":"44%"}}