Opinion polling for the next Portuguese legislative election

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 party's colour. In the instance that there is a tie, then no figure is shaded but both are displayed in bold. The lead column on the right shows the percentage-point difference between the two parties with the highest figures. Poll results use the date the survey's fieldwork was done, as opposed to the date of publication.

Polling firm/Link	Fieldwork date	Sample size	Turnout				CDU						O	Lead
Intercampus	9–13 Jun 2020	610	?	40.0	24.1	9.8	6.2	4.1	3.1	6.8	1.9	0.8	3.2	15.9
Aximage	5–8 Jun 2020	605	59.2	39.9	25.8	8.0	4.9	1.2	4.3	5.3	1.4	0.2	9.0	14.1
Eurosondagem	1–4 Jun 2020	1,021	?	38.0	29.3	8.0	5.3	2.7	3.0	4.1	1.1	–	8.5	8.7
Pitagórica	16–24 May 2020	802	?	44.8	24.1	6.1	5.8	2.8	3.3	6.4	1.6	–	5.1	20.7
Eurosondagem	17–20 May 2020	2,120	?	37.9	30.0	8.1	5.2	3.2	2.2	4.3	1.2	–	7.9	7.9
Intercampus	5–9 May 2020	620	?	40.3	23.3	9.0	5.9	3.6	3.6	6.8	3.2	0.7	3.6	17.0
Eurosondagem	4–7 May 2020	1,005	?	37.7	29.4	8.3	5.5	3.0	2.5	4.0	1.2	–	8.4	8.3
Pitagórica	15–26 Apr 2020	605	?	41.9	23.1	8.1	5.6	2.6	2.6	7.3	2.6	–	6.2	18.8
Intercampus	9–14 Apr 2020	623	?	35.4	23.3	11.9	5.8	3.9	4.9	7.8	2.4	0.7	3.9	12.1
Eurosondagem	29 Mar–2 Apr 2020	1,008	?	37.5	27.2	9.0	6.0	2.8	2.4	3.6	1.2	–	10.3	10.3
Pitagórica	13–21 Mar 2020	605	?	41.7	25.2	8.6	5.4	2.9	3.1	8.1	2.0	–	3.1	16.5
Intercampus	13–19 Mar 2020	611	?	31.4	21.9	14.5	6.1	3.6	5.9	8.6	2.3	0.2	5.5	9.5
Eurosondagem	1–5 Mar 2020	1,011	?	37.3	27.4	8.8	6.3	2.9	2.8	3.3	1.1	–	10.1	9.9
Aximage	14–18 Feb 2020	839	56.1	35.1	26.1	7.7	5.4	2.1	4.1	4.3	2.5	0.7	12.0	9.0
Intercampus	11–17 Feb 2020	614	?	31.1	23.8	13.2	6.3	3.5	5.4	6.9	2.9	0.8	6.1	7.3
Eurosondagem	2–6 Feb 2020	1,020	?	37.4	26.7	9.0	6.5	3.3	3.1	2.5	1.1	0.5	9.9	10.7
ICS/ISCTE	22 Jan–5 Feb 2020	800	?	33	28	9	8	4	3	6	2	1	6	5
Intercampus	19–24 Jan 2020	619	?	32.8	25.8	11.9	6.2	1.9	6.0	6.2	2.3	1.7	5.2	7.0
Eurosondagem	5–9 Jan 2020	1,010	?	37.2	26.5	9.6	6.6	3.5	3.6	2.2	1.3	0.6	8.9	10.7
Intercampus	12–17 Dec 2019	606	?	33.9	25.7	10.7	6.3	3.9	6.1	5.7	2.4	1.1	4.2	8.2
Eurosondagem	8–12 Dec 2019	1,019	?	37.1	26.9	9.5	7.1	3.6	3.5	1.9	1.1	0.6	8.7	10.2
Intercampus	20–26 Nov 2019	604	?	34.9	24.9	10.8	8.1	2.9	4.8	4.8	2.9	2.7	3.2	10.0
Eurosondagem	17–21 Nov 2019	1,011	?	36.9	27.1	10.1	6.9	4.0	3.3	–	–	–	11.7	9.8
Aximage	8–11 Nov 2019	639	?	37.4	27.1	10.4	6.2	4.0	3.2	3.0	1.3	0.9	6.5	10.3
Intercampus	22–28 Oct 2019	604	?	35.6	24.8	10.7	6.9	4.4	5.3	2.5	0.8	2.7	6.3	10.8
2019 Legislative Election	6 Oct 2019	N/A	48.6	36.4 108	27.8 79	9.5 19	6.3 12	4.2 5	3.3 4	1.3 1	1.3 1	1.1 1	8.8 0	8.6

Poll results showing public opinion on who would make the best Prime Minister are shown in the table below in reverse chronological order, showing the most recent first.

Poll results showing public opinion on the performance of the Government are shown in the table below in reverse chronological order, showing the most recent first.