date released      polling institute        socialist social democratic green - communist people 's party     left bloc   lead
0    october 10 , 1999       election results  44.1% 115 seats    32.3% 81 seats     9.0% 17 seats   8.3% 15 seats  2.4% 2 seats  11.8%
1     october 2 , 1999           euroexpansão            50.0%             32.0%              6.0%            8.0%          2.0%  18.0%
2     october 1 , 1999                  seeds            47.0%             32.0%              8.0%            7.0%          1.0%  15.0%
3     october 1 , 1999                 metris            48.0%             31.0%              7.0%            7.0%          1.0%  17.0%
4     october 1 , 1999  universidade católica            47.2%             30.0%              7.9%            7.2%          2.8%  17.2%
5  september 30 , 1999               marktest            46.2%             30.7%             10.6%            4.2%          2.8%  15.5%
6  september 30 , 1999                aximage            49.0%             33.0%              7.0%            6.0%          1.0%  16.0%
7     october 1 , 1995          1995 election  43.8% 112 seats    34.1% 88 seats     8.6% 15 seats   9.1% 15 seats             -   9.7%

Table as JSON:
{"date released":{"0":"october 10 , 1999","1":"october 2 , 1999","2":"october 1 , 1999","3":"october 1 , 1999","4":"october 1 , 1999","5":"september 30 , 1999","6":"september 30 , 1999","7":"october 1 , 1995"},"polling institute":{"0":"election results","1":"euroexpansão","2":"seeds","3":"metris","4":"universidade católica","5":"marktest","6":"aximage","7":"1995 election"},"socialist":{"0":"44.1% 115 seats","1":"50.0%","2":"47.0%","3":"48.0%","4":"47.2%","5":"46.2%","6":"49.0%","7":"43.8% 112 seats"},"social democratic":{"0":"32.3% 81 seats","1":"32.0%","2":"32.0%","3":"31.0%","4":"30.0%","5":"30.7%","6":"33.0%","7":"34.1% 88 seats"},"green - communist":{"0":"9.0% 17 seats","1":"6.0%","2":"8.0%","3":"7.0%","4":"7.9%","5":"10.6%","6":"7.0%","7":"8.6% 15 seats"},"people 's party":{"0":"8.3% 15 seats","1":"8.0%","2":"7.0%","3":"7.0%","4":"7.2%","5":"4.2%","6":"6.0%","7":"9.1% 15 seats"},"left bloc":{"0":"2.4% 2 seats","1":"2.0%","2":"1.0%","3":"1.0%","4":"2.8%","5":"2.8%","6":"1.0%","7":"-"},"lead":{"0":"11.8%","1":"18.0%","2":"15.0%","3":"17.0%","4":"17.2%","5":"15.5%","6":"16.0%","7":"9.7%"}}