Table: portuguese legislative election , 1991
[['date released', 'polling institute', 'social democratic', 'socialist', 'green - communist', 'democratic and social centre', 'lead'], ['october 6 , 1991', 'election results', '50.6% 135 seats', '29.1% 72 seats', '8.8% 17 seats', '4.4% 5 seats', '21.5%'], ['october 6 , 1991', 'exit poll - rtp1 universidade católica', '48.0% - 51.9%', '28.5% - 31.5%', '7.5% - 10.0%', '4.5% - 5.5%', '19.5% - 20.4%'], ['october 6 , 1991', 'exit poll - tsf / expresso euroexpansão', '45.8% - 50.2%', '29.8% - 33.9%', '6.8% - 9.1%', '3.7% - 5.5%', '16.0% - 16.3%'], ['october 6 , 1991', 'exit poll - antena1 euroteste', '47.0% - 50.0%', '31.0% - 34.0%', '7.5% - 10.0%', '4.0% - 5.0%', '16.0%'], ['september 28 , 1991', 'euroteste', '47.3%', '35.5%', '8.5%', '4.1%', '11.8%'], ['september 28 , 1991', 'euroteste', '46.0%', '37.0%', '9.7%', '3.9%', '9.0%'], ['september 28 , 1991', 'euroexpansão', '44.0%', '33.0%', '9.0%', '6.0%', '11.0%'], ['september 27 , 1991', 'marktest', '43.1%', '32.8%', '7.7%', '4.6%', '10.3%'], ['september 27 , 1991', 'pluriteste', '41.2%', '34.7%', '8.4%', '8.1%', '6.5%'], ['september 20 , 1991', 'euroteste', '45.6%', '35.5%', '10.0%', '4.4%', '10.1%'], ['september 20 , 1991', 'marktest', '41.9%', '31.9%', '7.3%', '4.4%', '10.0%'], ['september 16 , 1991', 'pluriteste', '39.2%', '26.6%', '6.2%', '6.0%', '12.6%'], ['september 16 , 1991', 'euroteste', '45.1%', '34.5%', '10.2%', '5.2%', '10.6%'], ['september 14 , 1991', 'norma', '45.0%', '37.5%', '11.2%', '3.5%', '7.5%'], ['august 28 , 1991', 'euroexpansão / marktest', '35.3%', '36.8%', '8.7%', '4.9%', '1.5%'], ['august 4 , 1991', 'euroteste / jn', '47.5%', '37.8%', '12.3%', '8.2%', '7.7%']]
Statement: Social Democratic were more represented in the Portuguese Legislative Election of 1991 than Green - Communist
Statement: Social Democratic were more represented in the Portuguese Legislative Election of 1991 than Democratic And Social Centre
Statement: Socialist were more represented in the Portuguese Legislative Election of 1991 than Green - Communist
Statement: Socialist were more represented in the Portuguese Legislative Election of 1991 than Democratic And Social Centre
Statement: in August 28 , 1991 Poll showed that Socialist took a slight Lead over the Social Democratic group