date released                       polling institute social democratic        socialist green - communist people 's party     left bloc   lead
0     march 17 , 2002                        election results   40.2% 105 seats   37.8% 96 seats     6.9% 12 seats   8.7% 14 seats  2.7% 3 seats   2.4%
1     march 17 , 2002  exit poll - rtp1 universidade católica     37.0% - 42.0%    36.0% - 41.0%       5.5% - 8.0%    7.5% - 10.0%   3.0% - 4.0%   1.0%
2     march 17 , 2002            exit poll - sic eurosondagem     40.1% - 43.9%    35.5% - 39.3%       6.2% - 8.4%     6.2% - 8.4%   2.0% - 3.4%   4.6%
3     march 17 , 2002             exit poll - tvi intercampus     37.8% - 42.8%    35.5% - 40.5%       6.8% - 9.8%     5.3% - 8.3%   1.6% - 4.2%   2.3%
4     march 15 , 2002                                marktest             44.0%            35.0%              8.0%            6.0%          4.0%   9.0%
5     march 15 , 2002                                lusófona             43.6%            40.9%              5.7%            7.1%          2.8%   2.7%
6     march 15 , 2002                            eurosondagem             41.4%            39.3%              6.9%            5.6%          3.5%   2.1%
7     march 15 , 2002                               eurequipa             44.7%            33.9%              7.1%            9.1%          3.2%  10.8%
8     march 15 , 2002                   universidade católica             42.2%            37.5%              6.9%            6.8%          3.6%   4.7%
9     march 14 , 2002                             intercampus             41.0%            39.0%              8.0%            5.0%          3.0%   2.0%
10    march 14 , 2002                                 aximage             44.0%            40.0%              7.0%            6.0%          2.0%   4.0%
11  october 10 , 1999                           1999 election    32.3% 81 seats  44.1% 115 seats     9.0% 17 seats   8.3% 15 seats  2.4% 2 seats  11.9%

Table as JSON:
{"date released":{"0":"march 17 , 2002","1":"march 17 , 2002","2":"march 17 , 2002","3":"march 17 , 2002","4":"march 15 , 2002","5":"march 15 , 2002","6":"march 15 , 2002","7":"march 15 , 2002","8":"march 15 , 2002","9":"march 14 , 2002","10":"march 14 , 2002","11":"october 10 , 1999"},"polling institute":{"0":"election results","1":"exit poll - rtp1 universidade católica","2":"exit poll - sic eurosondagem","3":"exit poll - tvi intercampus","4":"marktest","5":"lusófona","6":"eurosondagem","7":"eurequipa","8":"universidade católica","9":"intercampus","10":"aximage","11":"1999 election"},"social democratic":{"0":"40.2% 105 seats","1":"37.0% - 42.0%","2":"40.1% - 43.9%","3":"37.8% - 42.8%","4":"44.0%","5":"43.6%","6":"41.4%","7":"44.7%","8":"42.2%","9":"41.0%","10":"44.0%","11":"32.3% 81 seats"},"socialist":{"0":"37.8% 96 seats","1":"36.0% - 41.0%","2":"35.5% - 39.3%","3":"35.5% - 40.5%","4":"35.0%","5":"40.9%","6":"39.3%","7":"33.9%","8":"37.5%","9":"39.0%","10":"40.0%","11":"44.1% 115 seats"},"green - communist":{"0":"6.9% 12 seats","1":"5.5% - 8.0%","2":"6.2% - 8.4%","3":"6.8% - 9.8%","4":"8.0%","5":"5.7%","6":"6.9%","7":"7.1%","8":"6.9%","9":"8.0%","10":"7.0%","11":"9.0% 17 seats"},"people 's party":{"0":"8.7% 14 seats","1":"7.5% - 10.0%","2":"6.2% - 8.4%","3":"5.3% - 8.3%","4":"6.0%","5":"7.1%","6":"5.6%","7":"9.1%","8":"6.8%","9":"5.0%","10":"6.0%","11":"8.3% 15 seats"},"left bloc":{"0":"2.7% 3 seats","1":"3.0% - 4.0%","2":"2.0% - 3.4%","3":"1.6% - 4.2%","4":"4.0%","5":"2.8%","6":"3.5%","7":"3.2%","8":"3.6%","9":"3.0%","10":"2.0%","11":"2.4% 2 seats"},"lead":{"0":"2.4%","1":"1.0%","2":"4.6%","3":"2.3%","4":"9.0%","5":"2.7%","6":"2.1%","7":"10.8%","8":"4.7%","9":"2.0%","10":"4.0%","11":"11.9%"}}