2011年葡萄牙立法選舉
民調

| 日期 | 民調機構 | 社會黨 | 社會民主黨 | 人民黨 | 左翼集团 | 联合民主联盟 | 其他/未決定  | 差距 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 6/5 | 選舉結果 | 28.1% 74席 | 38.7% 108席 | 11.7% 24席 | 5.2% 8席 | 7.9% 16席 | 8.5% 0席 | 10.7%  |
| 6/5 | Exit Poll - RTP1Universidade Católica（页面存档备份，存于） | 26.0% – 30.0% 67 – 77席 | 37.0% – 42.0% 104 – 114席 | 11.0% – 14.0% 22 – 28席 | 5.0% – 7.0% 8 – 11席 | 7.0% – 9.0% 14 – 18席 | 5.0% – 8.0% 0 – 1席 | 11.0% 12.0%  |
| 6/5 | Exit Poll - SICEurosondagem（页面存档备份，存于） | 25.5% – 29.7% 69 – 77席 | 38.3% – 42.5% 102 – 109席 | 11.1% – 13.9% 22 – 25席 | 4.5% – 6.7% 7 – 10席 | 6.8% – 9.0% 15 – 16席 | — | 12.8%  |
| 6/5 | Exit Poll - TVIINTERCAMPUS（页面存档备份，存于） | 24.4% – 28.8% 64 – 78席 | 37.7% – 42.5% 107 – 121席 | 10.1% – 13.7% 12 – 28席 | 3.8% – 7.0% 4 – 12席 | 6.2% – 9.4% 11 – 20席 | 6.6% – 9.8% 0 – 1席 | 13.3% 13.7%  |
| 6/2 | Eurosondagem | 31.0% | 35.5% | 13.0% | 6.3% | 8.2% | 6.0% | 4.5%  |
| 5/31–6/2 | Aximage | 29.2% | 37.4% | 12.5% | 6.7% | 8.0% | 6.2% | 8.2%  |
| 6/1 | Eurosondagem | 31.1% | 35.9% | 13.0% | 5.9% | 7.8% | 6.3% | 4.8%  |
| 5/29–6/1 | Aximage | 30.1% | 36.3% | 12.4% | 6.6% | 8.1% | 6.5% | 6.2%  |
| 5/28–6/1 | INTERCAMPUS | 31.1% | 36.5% | 11.6% | 6.0% | 7.4% | 7.3% | 5.4%  |
| 5/31 | Eurosondagem | 31.3% | 35.4% | 13.4% | 6.0% | 7.9% | 6.0% | 4.1%  |
| 5/28–31 | Marktest（页面存档备份，存于） | 30.1% | 38.5% | 9.7% | 4.5% | 8.5% | 8.7% | 8.4%  |
| 5/30 | Eurosondagem（页面存档备份，存于） | 32.2% | 35.5% | 12.6% | 6.3% | 7.6% | 5.8% | 3.3%  |
| 25/8–29 | Universidade Católica（页面存档备份，存于） | 31.0% | 36.0% | 11.0% | 7.0% | 8.0% | 7.0% | 5.0%  |
| 5/29 | Eurosondagem | 32.1% | 34.7% | 12.9% | 6.3% | 7.7% | 6.3% | 2.6%  |
| 5/25–29 | INTERCAMPUS | 32.3% | 37.0% | 12.7% | 5.2% | 7.7% | 5.2% | 4.7%  |
| 5/27 | Eurosondagem | 32.4% | 33.7% | 13.2% | 6.4% | 7.8% | 6.5% | 1.3%  |
| 5/26 | Eurosondagem | 32.3% | 33.9% | 13.4% | 6.3% | 7.9% | 6.2% | 1.6%  |
| 5/21–26 | INTERCAMPUS | 34.1% | 35.8% | 11.3% | 6.5% | 7.7% | 4.5% | 1.7%  |
| 5/25 | Eurosondagem | 32.5% | 33.6% | 12.8% | 6.5% | 8.1% | 6.5% | 1.1%  |
| 5/24 | Eurosondagem | 32.0% | 33.7% | 13.2% | 6.7% | 8.1% | 6.3% | 1.7%  |
| 5/23 | Eurosondagem | 32.6% | 33.1% | 13.7% | 6.6% | 7.6% | 6.4% | 0.5%  |
| 5/21–22 | Universidade Católica（页面存档备份，存于） | 36.0% | 36.0% | 10.0% | 6.0% | 9.0% | 3.0% | 0.0%  |
| 5/18–22 | INTERCAMPUS | 33.2% | 39.6% | 12.1% | 5.6% | 6.6% | 3.0% | 6.4%  |
| 5/14–18 | Aximage（页面存档备份，存于） | 29.5% | 31.1% | 12.9% | 5.2% | 7.3% | 14.0% | 1.6%  |
| 5/11–15 | INTERCAMPUS | 35.4% | 36.1% | 12.6% | 6.2% | 7.5% | 2.2% | 0.7%  |
| 5/7–12 | INTERCAMPUS | 36.8% | 33.9% | 13.4% | 6.0% | 7.4% | 2.4% | 2.9%  |
| 5/9–10 | Marktest（页面存档备份，存于） | 33.4% | 39.7% | 9.0% | 4.8% | 6.5% | 6.6% | 6.3%  |
| 5/4–8 | INTERCAMPUS（页面存档备份，存于） | 35.1% | 36.2% | 10.9% | 6.5% | 7.7% | 3.6% | 1.1%  |
| 5/2–5 | INTERCAMPUS（页面存档备份，存于） | 34.8% | 37.0% | 10.5% | 7.0% | 7.9% | 2.8% | 2.2%  |
| 4/28–5/3 | Eurosondagem（页面存档备份，存于） | 32.5% | 35.8% | 11.1% | 6.6% | 7.7% | 6.3% | 3.3%  |
| 4/29–5/2 | Aximage | 28.3% | 31.5% | 11.2% | 7.7% | 9.3% | 12.0% | 3.2%  |
| 4/30–5/1 | Universidade Católica（页面存档备份，存于） | 36.0% | 34.0% | 10.0% | 5.0% | 9.0% | 6.0% | 2.0%  |
| 4/14–19 | Eurosondagem（页面存档备份，存于） | 32.7% | 36.3% | 11.3% | 6.9% | 7.8% | 5.0% | 3.6%  |
| 4/15–17 | Marktest | 36.1% | 35.3% | 7.5% | 6.0% | 8.1% | 7.0% | 0.8%  |
| 4/8–10 | INTERCAMPUS（页面存档备份，存于） | 33.1% | 38.7% | 9.4% | 7.6% | 8.1% | 3.1% | 5.6%  |
| 4/2–3 | Universidade Católica（页面存档备份，存于） | 33.0% | 39.0% | 7.0% | 6.0% | 8.0% | 7.0% | 6.0%  |
| 3/28–30 | Aximage | 28.4% | 34.8% | 10.8% | 6.5% | 8.5% | 11.0% | 6.4%  |
| 3/27–30 | Eurosondagem（页面存档备份，存于） | 30.4% | 37.3% | 10.7% | 7.7% | 8.4% | 5.5% | 6.9%  |
| 3/24–26 | INTERCAMPUS（页面存档备份，存于） | 32.8% | 42.2% | 8.7% | 7.9% | 7.1% | 1.3% | 9.4%  |
3/23：若瑟·蘇格拉底因不信任動議通過而下台，確定舉行提前選舉
| 3/18–23 | Marktest（页面存档备份，存于） | 24.5% | 46.7% | 6.3% | 8.9% | 6.7% | 6.9% | 22.2%  |
| 3/3–7 | Aximage（页面存档备份，存于） | 27.9% | 37.9% | 8.9% | 6.5% | 10.7% | 8.1% | 10.0%  |
| 2/23–28 | Eurosondagem（页面存档备份，存于） | 30.6% | 36.9% | 9.9% | 7.7% | 8.6% | 6.3% | 6.3%  |
| 2/17–23 | Marktest（页面存档备份，存于） | 29.1% | 47.8% | 4.2% | 5.9% | 6.1% | 6.9% | 18.7%  |
| 2/3–8 | Eurosondagem（页面存档备份，存于） | 29.3% | 36.3% | 10.2% | 9.5% | 9.2% | 5.5% | 7.0%  |
| 2/1–3 | Aximage（页面存档备份，存于） | 27.8% | 37.8% | 9.5% | 6.5% | 9.3% | 9.1% | 10.0%  |
| 1/19–21 | Eurosondagem（页面存档备份，存于） | 30.3% | 37.4% | 9.6% | 9.3% | 8.4% | 5.0% | 7.1%  |
| 1/16–19 | INTERCAMPUS（页面存档备份，存于） | 30.8% | 36.8% | 5.8% | 7.3% | 7.1% | 12.2% | 6.0%  |
| 1/5–11 | Eurosondagem（页面存档备份，存于） | 29.6% | 37.3% | 10.1% | 9.0% | 8.8% | 5.2% | 7.7%  |
| 1/3–6 | Aximage（页面存档备份，存于） | 25.4% | 38.3% | 8.8% | 7.5% | 9.9% | 10.1% | 12.9%  |
2011
| 12/10–15 | INTERCAMPUS（页面存档备份，存于） | 30.1% | 41.6% | 7.7% | 10.7% | 8.8% | 1.1% | 11.5%  |
| 12/5–7 | Aximage（页面存档备份，存于） | 27.2% | 39.8% | 8.8% | 7.4% | 8.4% | 8.4% | 12.6%  |
| 12/2–7 | Eurosondagem（页面存档备份，存于） | 30.3% | 36.2% | 9.6% | 9.3% | 8.4% | 6.2% | 5.9%  |
| 11/16–19 | Marktest（页面存档备份，存于） | 26.9% | 44.3% | 6.9% | 8.7% | 6.7% | 6.5% | 17.4%  |
| 11/12–17 | INTERCAMPUS（页面存档备份，存于） | 30.5% | 39.2% | 8.5% | 11.0% | 9.7% | 1.1% | 8.7%  |
| 11/4–9 | Eurosondagem（页面存档备份，存于） | 30.0% | 36.9% | 9.3% | 9.2% | 8.8% | 5.8% | 6.9%  |
| 10/26–29 | Aximage（页面存档备份，存于） | 26.5% | 35.2% | 9.1% | 8.4% | 9.8% | 11.0% | 8.7%  |
| 10/23–25 | Universidade Católica（页面存档备份，存于） | 26.0% | 40.0% | 7.0% | 12.0% | 8.0% | 7.0% | 14.0%  |
| 10/19–24 | Marktest（页面存档备份，存于） | 25.1% | 42.0% | 8.1% | 9.8% | 8.3% | 6.7% | 16.9%  |
| 10/6–12 | Eurosondagem（页面存档备份，存于） | 35.3% | 35.3% | 8.0% | 7.8% | 8.4% | 5.2% | 0.0%  |
| 10/4–6 | INTERCAMPUS（页面存档备份，存于） | 32.0% | 35.2% | 9.1% | 10.6% | 11.1% | 2.0% | 3.2%  |
| 10/1–4 | Aximage（页面存档备份，存于） | 31.7% | 30.6% | 10.2% | 8.6% | 7.6% | 11.3% | 1.1%  |
| 9/14–17 | Marktest（页面存档备份，存于） | 35.7% | 38.0% | 6.7% | 6.5% | 6.5% | 6.6% | 2.3%  |
| 9/6–9 | Aximage（页面存档备份，存于） | 33.8% | 32.1% | 7.9% | 8.3% | 8.6% | 9.3% | 1.7%  |
| 9/1–7 | Eurosondagem（页面存档备份，存于） | 36.0% | 35.8% | 8.4% | 7.1% | 7.7% | 5.0% | 0.2%  |
| 7/28–8/2 | Eurosondagem（页面存档备份，存于） | 35.0% | 36.0% | 9.0% | 7.2% | 8.0% | 4.8% | 1.0%  |
| 7/20–26 | Marktest（页面存档备份，存于） | 33.3% | 37.3% | 7.5% | 8.5% | 6.8% | 6.6% | 4.0%  |
| 7/16–19 | INTERCAMPUS（页面存档备份，存于） | 34.4% | 39.2% | 5.9% | 9.0% | 9.5% | 2.0% | 4.8%  |
| 7/8–11 | Euroexpansão（页面存档备份，存于） | 31.7% | 41.0% | 3.8% | 6.5% | 6.3% | 10.7% | 9.3%  |
| 7/1–6 | Eurosondagem（页面存档备份，存于） | 33.7% | 36.2% | 9.6% | 7.7% | 8.0% | 4.8% | 2.5%  |
| 7/1–4 | Aximage（页面存档备份，存于） | 30.6% | 34.9% | 6.7% | 8.2% | 10.4% | 9.2% | 4.3%  |
| 6/19–21 | Universidade Católica（页面存档备份，存于） | 34.0% | 37.0% | 6.0% | 6.0% | 10.0% | 7.0% | 3.0%  |
| 6/15–20 | Marktest（页面存档备份，存于） | 24.1% | 47.7% | 6.9% | 8.9% | 6.0% | 6.4% | 23.6%  |
| 6/2–8 | Eurosondagem（页面存档备份，存于） | 34.8% | 34.9% | 10.1% | 7.7% | 7.5% | 5.0% | 0.1%  |
| 6/1–7 | Aximage（页面存档备份，存于） | 30.5% | 31.6% | 7.4% | 9.7% | 9.9% | 10.9% | 1.1%  |
| 5/18–20 | Marktest（页面存档备份，存于） | 27.6% | 43.9% | 7.5% | 7.7% | 7.1% | 6.2% | 16.3%  |
| 5/13–18 | Eurosondagem（页面存档备份，存于） | 36.2% | 33.0% | 11.3% | 7.1% | 7.7% | 4.7% | 3.2%  |
| 5/4–7 | Aximage（页面存档备份，存于） | 30.2% | 31.5% | 8.2% | 8.6% | 10.4% | 11.1% | 1.3%  |
| 4/27–30 | INTERCAMPUS（页面存档备份，存于） | 35.8% | 41.6% | 5.8% | 7.8% | 7.8% | 1.2% | 5.8%  |
| 4/20–25 | Marktest（页面存档备份，存于） | 34.0% | 39.8% | 4.5% | 8.3% | 7.2% | 6.2% | 5.8%  |
| 4/8–13 | Eurosondagem（页面存档备份，存于） | 36.0% | 28.5% | 13.1% | 8.0% | 8.2% | 6.2% | 7.5%  |
| 4/5–8 | Aximage（页面存档备份，存于） | 32.2% | 30.4% | 10.8% | 8.3% | 8.7% | 9.6% | 1.8%  |
3/29：佩德羅·桑塔納·洛佩斯當選社民黨黨魁
| 3/16–21 | Marktest（页面存档备份，存于） | 35.6% | 30.8% | 9.9% | 11.0% | 6.6% | 6.1% | 4.8%  |
| 3/6–9 | Universidade Católica（页面存档备份，存于） | 41.0% | 33.0% | 10.0% | 6.0% | 6.0% | 4.0% | 8.0%  |
| 3/5–9 | Aximage（页面存档备份，存于） | 34.0% | 25.1% | 11.5% | 8.9% | 7.4% | 13.1% | 8.9%  |
| 3/4–9 | Eurosondagem（页面存档备份，存于） | 36.9% | 26.2% | 14.8% | 8.8% | 8.4% | 4.9% | 10.7%  |
| 2/23–27 | INTERCAMPUS（页面存档备份，存于） | 40.4% | 34.4% | 7.8% | 10.1% | 6.3% | 1.0% | 6.0%  |
| 2/16–21 | Marktest（页面存档备份，存于） | 35.9% | 30.9% | 9.5% | 10.6% | 6.8% | 6.3% | 5.0%  |
| 2/10–13 | Aximage（页面存档备份，存于） | 32.4% | 26.3% | 10.7% | 9.2% | 8.3% | 13.1% | 6.1%  |
| 2/4–9 | Eurosondagem（页面存档备份，存于） | 38.1% | 26.9% | 13.6% | 8.4% | 8.3% | 4.7% | 11.2%  |
| 2/2–5 | Aximage（页面存档备份，存于） | 33.8% | 24.8% | 12.1% | 8.6% | 8.7% | 12.0% | 9.0%  |
| 1/19–23 | Marktest（页面存档备份，存于） | 40.5% | 29.2% | 10.2% | 5.5% | 8.5% | 6.1% | 11.3%  |
| 1/7–12 | Eurosondagem（页面存档备份，存于） | 38.0% | 27.4% | 12.1% | 9.3% | 8.4% | 4.8% | 10.6%  |
| 1/6–11 | Aximage（页面存档备份，存于） | 33.4% | 26.5% | 11.7% | 10.0% | 8.2% | 10.2% | 6.9%  |
2010
| 12/7–10 | Aximage（页面存档备份，存于） | 32.5% | 24.4% | 12.0% | 10.5% | 7.7% | 12.9% | 8.1%  |
| 11/25–12/1 | Eurosondagem（页面存档备份，存于） | 38.5% | 26.9% | 12.7% | 9.2% | 7.7% | 5.0% | 11.6%  |
| 11/17–19 | Marktest（页面存档备份，存于） | 41.7% | 25.6% | 12.1% | 8.0% | 6.5% | 6.1% | 16.1%  |
| 11/6–8 | Aximage（页面存档备份，存于） | 35.2% | 27.3% | 10.3% | 8.8% | 7.8% | 10.6% | 7.9%  |
| 10/29–11/3 | Eurosondagem（页面存档备份，存于） | 38.8% | 27.5% | 12.5% | 8.4% | 8.0% | 4.8% | 11.3%  |
| 10/0–24 | Marktest（页面存档备份，存于） | 42.9% | 23.7% | 12.5% | 8.8% | 6.0% | 6.1% | 19.2%  |
| 10/12–15 | Aximage（页面存档备份，存于） | 35.3% | 25.4% | 9.7% | 10.8% | 6.0% | 12.8% | 9.9%  |
|  2009/9/27 | 選舉結果 | 36.6% 97席 | 29.1% 81席 | 10.4% 21席 | 9.8% 16席 | 7.9% 15席 | 6.2% 0席 | 7.5%  |