# Opinion polling for the 1979 Spanish general election

In the run up to the 1979 Spanish general election, various organisations carried out opinion polling to gauge voting intention in Spain during the term of the Constituent Cortes Generales. Results of such polls are displayed in this article. The date range for these opinion polls is from the previous general election, held on 15 June 1977, to the day the next election was held, on 1 March 1979.
Voting intention estimates refer mainly to a hypothetical Congress of Deputies election. Polls are listed in reverse chronological order, showing the most recent first and using the dates when the survey fieldwork was done, as opposed to the date of publication. Where the fieldwork dates are unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour. If a tie ensues, this is applied to the figures with the highest percentages. The "Lead" columns on the right shows the percentage-point difference between the parties with the highest percentages in a poll.

## Electoral polling
### Nationwide polling
#### Voting intention estimates

The table below lists nationwide voting intention estimates. Refusals are generally excluded from the party vote percentages, while question wording and the treatment of "don't know" responses and those not intending to vote may vary between polling organisations. When available, seat projections determined by the polling organisations are displayed below (or in place of) the percentages in a smaller font; 176 seats were required for an absolute majority in the Congress of Deputies.

##### Color key

Exit poll
| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | PNV | | Lead |
| 1979 general election | 1 Mar 1979 | — | 68.0 | 34.8 168 | 30.4 121 | 10.8 23 | 6.1 9 | | 2.7 8 | 1.6 7 | 2.1 1 | 4.4 |
| Government | 1 Mar 1979 | ? | ? | 34.6 168/172 | 29.8 114/118 | 10.8 25 | 5.5 8 | | 2.6 10 | 1.6 8 | 2.0 1 | 4.8 |
| SFGPP/Ya | 26 Feb 1979 | 16,817 | ? | 33.1 166 | 31.9 132 | 8.2 25 | 6.3 7 | | – | ? 8 | – | 1.2 |
| Sofemasa/El País | 19–21 Feb 1979 | 16,869 | 77.7 | 32.9 153 | 35.0 140 | 11.0 22 | 6.3 9 | | 1.8 5 | 1.7 7 | 2.3 2 | 2.1 |
| PSOE | 18 Feb 1979 | ? | 65 | 28.0– 32.0 | 31.0– 35.0 | – | – | | – | – | – | 3.0 |
| Equipo Eidos/Europa Press | 12–14 Feb 1979 | 3,700 | ? | 34.0 167 | 32.0 132 | 12.0 21 | 7.0 14 | | 2.9 7 | 1.6 7 | – | 2.0 |
| RNC/ABC | 7 Feb 1979 | 2,999 | 73 | 30.6 | 32.3 | 12.9 | 11.3 | | – | 2.7 | – | 1.7 |
| PSOE | 1 Feb 1979 | ? | 65 | 27.0– 32.0 | 32.0– 37.0 | – | – | | – | – | – | 5.0 |
| Sofemasa/El País | 30–31 Jan 1979 | 2,000 | ? | 30.6 | 33.5 | 9.3 | 3.7 | | – | – | 1.8 | 2.9 |
| ICSA–Gallup/El Periódico | 2–29 Nov 1978 | 2,200 | ? | 27.3 | 38.7 | 10.8 | 3.8 | | – | – | – | 11.4 |
| Sofemasa/El País | 9–11 Jun 1978 | 2,000 | ? | 28.5 | 33.6 | 9.7 | 7.1 | | – | – | – | 5.1 |
| Diario 16 | 10 Mar 1978 | ? | 79 | 29.0– 31.0 | 38.0– 40.0 | 6.0– 8.0 | 6.0– 8.0 | 6.0– 8.0 | – | – | – | 9.0 |
| 1977 general election | 15 Jun 1977 | — | 78.8 | 34.4 165 | 29.3 118 | 9.3 20 | 8.3 16 | 4.5 6 | 2.8 11 | 1.6 8 | 0.5 0 | 5.1 |

#### Voting preferences

The table below lists raw, unweighted voting preferences.
| Polling firm/Commissioner | Fieldwork date | Sample size | | | | | | | PNV | | ? | N | Lead |
| 1979 general election | 1 Mar 1979 | — | 23.4 | 20.4 | 7.2 | 4.1 | | 1.8 | 1.1 | 1.4 | — | 32.0 | 4.4 |
| Sofemasa/El País | 19–21 Feb 1979 | 16,869 | 21.5 | 22.9 | 7.2 | 3.3 | | 1.2 | 1.1 | 1.5 | 23.2 | 11.4 | 1.4 |
| CIS | 1–10 Feb 1979 | 24,395 | 14.6 | 14.0 | 4.4 | 2.2 | | 0.6 | 1.0 | 0.6 | 54.2 | 4.3 | 0.6 |
| RNC/ABC | 7 Feb 1979 | 2,999 | 19.0 | 20.0 | 8.0 | 7.0 | | – | 1.7 | – | 38.0 | 38.0 | 1.0 |
| ICSA–Gallup/ABC | 7 Feb 1979 | 2,600 | 19.0 | 29.0 | 6.0 | 8.0 | | | – | 1.0 | 30.0 | 30.0 | 10.0 |
| CIS | 25 Jan–3 Feb 1979 | 25,516 | 14.3 | 14.5 | 4.4 | 2.0 | | 0.7 | 0.8 | 0.5 | 55.7 | 4.2 | 0.2 |
| Sofemasa/El País | 30–31 Jan 1979 | 2,000 | 18.4 | 21.0 | 5.9 | 2.3 | | – | – | 1.1 | 32.3 | 8.8 | 2.6 |
| CIS | 19–22 Jan 1979 | 1,188 | 18.5 | 17.5 | 3.1 | 2.6 | | 0.5 | 0.8 | – | 50.2 | 3.1 | 1.0 |
| CIS | 1 Jan 1979 | 1,170 | 18.0 | 16.0 | 4.0 | 3.0 | | 1.0 | 0.0 | – | 51.0 | 4.0 | 2.0 |
| CIS | 17–19 Dec 1978 | 1,188 | 24.0 | 28.0 | 6.0 | 3.0 | | 1.0 | 2.0 | – | 18.0 | 13.0 | 4.0 |
| CIS | 10–12 Dec 1978 | 987 | 23.5 | 19.4 | 4.0 | 3.3 | | 0.7 | 0.4 | – | 41.7 | 2.2 | 4.1 |
| CIS | 1 Dec 1978 | 1,196 | 21.2 | 19.5 | 4.4 | 4.7 | | 0.8 | 0.8 | – | 39.8 | 3.5 | 1.7 |
| CIS | 20–23 Nov 1978 | 1,166 | 18.7 | 18.8 | 4.2 | 2.7 | | 0.6 | 1.5 | – | 45.2 | 4.2 | 0.1 |
| CIS | 13–16 Nov 1978 | 1,183 | 18.4 | 19.5 | 3.7 | 2.0 | | 0.3 | 0.7 | – | 46.5 | 4.6 | 1.1 |
| CIS | 6–9 Nov 1978 | 1,189 | 20.4 | 18.3 | 3.8 | 2.4 | | 1.2 | 1.3 | – | 42.5 | 4.9 | 2.1 |
| CIS | 1 Nov 1978 | 5,716 | 18.0 | 20.0 | 4.0 | 3.0 | | 1.0 | 0.0 | – | 46.0 | 5.0 | 2.0 |
| CIS | 23–26 Oct 1978 | 1,169 | 17.2 | 19.2 | 4.1 | 3.9 | | 0.3 | 1.5 | – | 42.4 | 8.0 | 2.0 |
| CIS | 16–18 Oct 1978 | 1,190 | 20.2 | 17.5 | 4.2 | 3.7 | | 1.6 | 1.4 | – | 37.2 | 9.3 | 2.7 |
| CIS | 9–11 Oct 1978 | 1,196 | 19.2 | 21.0 | 4.9 | 3.1 | | 0.1 | 0.8 | – | 40.8 | 7.4 | 1.8 |
| CIS | 27–30 Sep 1978 | 1,184 | 16.3 | 19.3 | 4.9 | 3.9 | | 0.8 | 0.8 | – | 40.3 | 9.2 | 3.0 |
| CIS | 18–26 Sep 1978 | 1,216 | 13.8 | 27.2 | 9.4 | 5.3 | | 1.9 | 1.6 | – | 22.8 | 12.4 | 13.4 |
| CIS | 24–26 Jul 1978 | 1,181 | 20.1 | 24.7 | 6.4 | 3.3 | | 0.8 | 1.4 | – | 25.0 | 13.8 | 4.6 |
| CIS | 10–12 Jul 1978 | 5,350 | 15.2 | 22.5 | 6.2 | 5.0 | | – | 1.1 | – | 39.4 | 6.2 | 3.0 |
| CIS | 1 Jul 1978 | 1,199 | 17.0 | 31.0 | 7.0 | 3.0 | | 2.0 | 1.0 | – | 24.0 | 10.0 | 14.0 |
| ICSA–Gallup/Informaciones | 1–16 Feb 1978 | 2,035 | 17.2 | 27.8 | 4.9 | 2.9 | 5.7 | 2.2 | 1.0 | – | 33.6 | 33.6 | 10.6 |
| CIS | 1 Jan 1978 | 5,653 | 19.0 | 20.0 | 6.0 | 3.0 | 3.0 | 0.0 | 1.0 | – | 36.0 | 8.0 | 1.0 |
| ICSA–Gallup/Informaciones | 1–16 Dec 1977 | 2,037 | 17.8 | 28.2 | 6.1 | 3.4 | 5.0 | 1.6 | 1.5 | – | 30.2 | 30.2 | 10.4 |
| ICSA–Gallup/Informaciones | 18 Nov 1977 | 2,134 | 18.2 | 30.5 | 5.8 | 3.1 | 5.7 | 3.0 | 2.0 | – | 26.5 | 26.5 | 12.3 |
| ICSA–Gallup/Diario 16 | 17–29 Oct 1977 | 2,134 | 17.0 | 32.4 | 6.6 | 3.1 | 6.0 | 2.9 | 1.7 | 0.4 | 24.3 | 24.3 | 15.4 |
| ICSA–Gallup/Informaciones | 3–14 Oct 1977 | 1,944 | 17.3 | 31.4 | 6.3 | 3.0 | 6.1 | 2.9 | 1.9 | – | 25.4 | 25.4 | 14.1 |
| CIS | 17–18 Sep 1977 | 1,554 | 24.0 | 24.0 | 6.0 | 5.0 | 5.0 | 1.0 | – | – | 31.0 | 31.0 | Tie |
| 1977 general election | 15 Jun 1977 | — | 26.8 | 22.8 | 7.3 | 6.4 | 3.5 | 2.2 | 1.3 | 0.4 | — | 21.2 | 4.0 |