Opinion polling for the 2011 Portuguese presidential election

In the run up to the 2011 Portuguese presidential election, various organisations carried out opinion polling to gauge voting intention in Portugal. Results of such polls are displayed in this article.

Poll results are listed in the table below in reverse chronological order, showing the most recent first. The highest percentage figure in each polling survey is displayed in bold, and the background shaded in the leading candidate colour. In the instance that there is a tie, then no figure is shaded but both are displayed in bold. Poll results use the date the survey's fieldwork was done, as opposed to the date of publication.

Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org.

  Exit poll

Date released	Poll source							Others/ Undecided	Lead
		Silva PSD, CDS-PP – Inc.	Alegre PS, BE	Nobre Ind.	Moura Ind.	Lopes PCP	Coelho PND
23 January 2011	Election results	53.0	19.7	14.1	1.6	7.1	4.5	—	33.3
23 January 2011	Universidade Católica	52.0–58.0	18.0–21.0	13.5– 16.5	1.0–2.0	5.0–8.0	2.0–4.0	—	35.5
23 January 2011	Eurosondagem	51.6–56.0	17.1–20.9	13.1–16.3	1.1–2.1	6.3–7.5	3.3–4.5	—	34.8
23 January 2011	INTERCAMPUS	51.4–55.4	17.2–21.2	12.4– 16.4	0.7–2.7	5.8–8.8	3.1–5.1	—	34.2
21 January 2011	Sol (average)	58.0	22.0	11.0	2.0	5.0	2.0	—	36.0
21 January 2011	Universidade Católica	59.0	22.0	10.0	1.0	6.0	2.0	—	37.0
21 January 2011	Eurosondagem	56.3	25.0	10.1	2.0	5.2	1.4	—	31.3
21 January 2011	Aximage	54.7	25.6	10.7	1.8	6.3	0.9	—	29.1
20 January 2011	INTERCAMPUS	54.6	22.8	9.1	2.6	8.2	2.7	—	31.8
19 January 2011	Marktest	61.5	15.0	12.7	1.2	3.3	2.1	4.2	46.5
8 January 2011	Aximage	57.1	20.8	8.7	3.1	2.0	0.5	7.8	36.3
7 January 2011	INTERCAMPUS	60.1	25.3	4.2	2.5	6.3	1.6	—	34.8
23 December 2010	Eurosondagem	60.0	30.0	4.8	0.7	4.5	—	—	30.0
19 December 2010	INTERCAMPUS	64.3	20.7	5.5	1.0	4.5	—	—	43.6
27 November 2010	Eurosondagem	57.0	32.0	5.2	1.0	4.8	—	—	25.0
26 November 2010	Marktest	78.3	15.0	4.0	0.0	0.7	—	—	63.3
21 November 2010	INTERCAMPUS	61.5	26.1	4.5	0.5	3.7	—	3.7	35.4
29 October 2010	Marktest	71.3	20.2	5.0	0.9	1.1	—	—	51.1
29 October 2010	Universidade Católica	63.0	20.0	7.0	1.0	3.0	—	—	43.0
13 October 2010	Aximage	55.1	35.7	7.1	0.2	1.9	—	—	19.4
9 October 2010	INTERCAMPUS	55.5	30.7	4.9	1.2	5.6	—	—	24.8
25 September 2010	Marktest	71.0	22.0	4.0	0.2	1.0	—	—	49.0
24 September 2010	Eurosondagem	54.9	33.0	6.2	1.1	4.8	—	—	21.9
12 September 2010	Aximage	58.1	32.1	5.4	0.0	4.4	—	—	26.0
31 July 2010	Marktest	67.1	19.6	10.0	0.7	—	—	—	47.5
24 July 2010	INTERCAMPUS	59.4	26.8	9.1	2.9	—	—	—	32.6
12 July 2010	Euroexpansão	51.1	14.7	4.1	—	—	—	22.1	36.4
11 July 2010	Aximage	55.3	26.9	11.6	—	—	—	6.2	28.4
28 June 2010	Universidade Católica	50.0	19.0	7.0	—	—	—	25.0	31.0
13 June 2010	Aximage	53.4	28.1	8.6	—	—	—	9.9	25.3
14 March 2010	Universidade Católica	57.0	19.0	8.0	—	—	—	16.0	38.0
13 March 2010	Aximage	56.0	21.6	13.8	—	—	—	8.6	34.4
12 March 2010	Eurosondagem	36.9	25.0	9.6	—	(5.0)	—	23.5	11.9
22 January 2010	Aximage	60.3	39.7	—	—	—	—	—	20.6

• ERC - Official publication of polls