Portuguese legislative election, 1985 Opinion Polling 125 seats needed for a majority

| Date_Released | Institute | Socialist | Social_Democratic | United_People_Alliance | Democratic_and_Social_Centre | Democratic_Renewal | Lead_ |
|---|---|---|---|---|---|---|---|
| October 6, 1985 | Election Results | 20.8% 57 seats | 29.9% 88 seats | 15.5% 38 seats | 10.0% 22 seats | 17.9% 4 seats | 9.1% |
| October 6, 1985 | Exit Poll - RTP1, 22:50h | 22.0% – 26.9% | 26.8% – 29.7% | 15.0% – 18.1% | 9.3% – 10.8% | 14.5% – 16.5% | 2.8% – 4.8% |
| October 6, 1985 | Exit Poll - RTP1, 21:10h | 23.8% – 26.9% | 28.0% – 29.8% | 17.3% – 18.1% | 9.8% – 10.7% | 11.1% – 14.9% | 2.9% – 6.0% |
| October 6, 1985 | Exit Poll - Rádio Comercial | 19.0% – 22.0% | 29.0% – 31.0% | 14.0% – 16.0% | 8.0% – 16.0% | 18.0% – 22.0% | 9.0% – 10.0% |
| October 4, 1985 | Expresso | 28.0% – 32.0% | 27.0% – 31.0% | 15.0% – 17.0% | 9.0% – 12.0% | 8.0% – 11.0% | 1.0% |