Opinion Poll by Eurosondagem for Porto Canal and Sol, 5–8 April 2021
Voting Intentions | Seats | Coalitions | Technical Information
Voting Intentions

Confidence Intervals
| Party | Last Result | Poll Result | 80% Confidence Interval | 90% Confidence Interval | 95% Confidence Interval | 99% Confidence Interval |
|---|---|---|---|---|---|---|
| Partido Socialista | 36.4% | 39.6% | 37.7–41.6% | 37.1–42.2% | 36.6–42.6% | 35.7–43.6% |
| Partido Social Democrata | 27.8% | 27.8% | 26.1–29.7% | 25.6–30.2% | 25.2–30.7% | 24.4–31.6% |
| Chega | 1.3% | 7.7% | 6.8–8.9% | 6.5–9.3% | 6.2–9.6% | 5.8–10.2% |
| Bloco de Esquerda | 9.5% | 6.2% | 5.3–7.3% | 5.1–7.6% | 4.8–7.8% | 4.5–8.4% |
| Coligação Democrática Unitária | 6.3% | 5.2% | 4.4–6.2% | 4.2–6.5% | 4.0–6.7% | 3.6–7.3% |
| Iniciativa Liberal | 1.3% | 2.5% | 1.9–3.2% | 1.8–3.4% | 1.7–3.6% | 1.4–4.0% |
| Pessoas–Animais–Natureza | 3.3% | 2.1% | 1.6–2.8% | 1.5–3.0% | 1.3–3.1% | 1.2–3.5% |
| CDS–Partido Popular | 4.2% | 2.0% | 1.5–2.7% | 1.4–2.8% | 1.3–3.0% | 1.1–3.4% |
Note: The poll result column reflects the actual value used in the calculations. Published results may vary slightly, and in addition be rounded to fewer digits.
Seats


Confidence Intervals
| Party | Last Result | Median | 80% Confidence Interval | 90% Confidence Interval | 95% Confidence Interval | 99% Confidence Interval |
|---|---|---|---|---|---|---|
| Partido Socialista | 108 | 115 | 109–120 | 106–122 | 105–123 | 103–127 |
| Partido Social Democrata | 79 | 78 | 71–84 | 69–84 | 67–86 | 65–88 |
| Chega | 1 | 13 | 11–17 | 11–18 | 11–19 | 9–22 |
| Bloco de Esquerda | 19 | 11 | 7–13 | 7–14 | 7–16 | 5–16 |
| Coligação Democrática Unitária | 12 | 8 | 6–10 | 5–12 | 5–13 | 5–14 |
| Iniciativa Liberal | 1 | 3 | 2–4 | 2–4 | 2–4 | 1–5 |
| Pessoas–Animais–Natureza | 4 | 2 | 1–2 | 0–2 | 0–3 | 0–4 |
| CDS–Partido Popular | 5 | 1 | 0–1 | 0–2 | 0–2 | 0–2 |
Partido Socialista
For a full overview of the results for this party, see the Partido Socialista page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 99 | 0% | 100% | |
| 100 | 0% | 99.9% | |
| 101 | 0.2% | 99.9% | |
| 102 | 0.2% | 99.7% | |
| 103 | 0.1% | 99.5% | |
| 104 | 2% | 99.4% | |
| 105 | 2% | 98% | |
| 106 | 0.8% | 96% | |
| 107 | 1.0% | 95% | |
| 108 | 3% | 94% | Last Result |
| 109 | 3% | 91% | |
| 110 | 5% | 88% | |
| 111 | 11% | 83% | |
| 112 | 7% | 72% | |
| 113 | 9% | 65% | |
| 114 | 5% | 56% | |
| 115 | 7% | 51% | Median |
| 116 | 7% | 44% | Majority |
| 117 | 8% | 37% | |
| 118 | 7% | 30% | |
| 119 | 4% | 23% | |
| 120 | 9% | 19% | |
| 121 | 2% | 9% | |
| 122 | 4% | 7% | |
| 123 | 1.3% | 3% | |
| 124 | 0.2% | 2% | |
| 125 | 0.1% | 2% | |
| 126 | 0.2% | 2% | |
| 127 | 1.2% | 2% | |
| 128 | 0% | 0.4% | |
| 129 | 0.1% | 0.3% | |
| 130 | 0.1% | 0.3% | |
| 131 | 0.2% | 0.2% | |
| 132 | 0% | 0% |
Partido Social Democrata
For a full overview of the results for this party, see the Partido Social Democrata page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 62 | 0% | 100% | |
| 63 | 0.1% | 99.9% | |
| 64 | 0.1% | 99.9% | |
| 65 | 0.8% | 99.8% | |
| 66 | 0.9% | 99.0% | |
| 67 | 0.6% | 98% | |
| 68 | 0.7% | 97% | |
| 69 | 4% | 97% | |
| 70 | 1.0% | 93% | |
| 71 | 2% | 92% | |
| 72 | 2% | 89% | |
| 73 | 7% | 87% | |
| 74 | 5% | 80% | |
| 75 | 15% | 75% | |
| 76 | 7% | 60% | |
| 77 | 2% | 53% | |
| 78 | 6% | 51% | Median |
| 79 | 7% | 44% | Last Result |
| 80 | 8% | 38% | |
| 81 | 9% | 30% | |
| 82 | 7% | 20% | |
| 83 | 1.3% | 14% | |
| 84 | 8% | 13% | |
| 85 | 1.3% | 5% | |
| 86 | 1.1% | 3% | |
| 87 | 0.1% | 2% | |
| 88 | 2% | 2% | |
| 89 | 0.1% | 0.4% | |
| 90 | 0.1% | 0.3% | |
| 91 | 0.1% | 0.1% | |
| 92 | 0% | 0% |
Chega
For a full overview of the results for this party, see the Chega page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 1 | 0% | 100% | Last Result |
| 2 | 0% | 100% | |
| 3 | 0% | 100% | |
| 4 | 0% | 100% | |
| 5 | 0% | 100% | |
| 6 | 0% | 100% | |
| 7 | 0% | 100% | |
| 8 | 0.3% | 100% | |
| 9 | 0.2% | 99.7% | |
| 10 | 0.6% | 99.5% | |
| 11 | 30% | 98.9% | |
| 12 | 7% | 69% | |
| 13 | 24% | 62% | Median |
| 14 | 17% | 38% | |
| 15 | 8% | 21% | |
| 16 | 2% | 13% | |
| 17 | 4% | 11% | |
| 18 | 4% | 7% | |
| 19 | 2% | 3% | |
| 20 | 0.4% | 1.2% | |
| 21 | 0.2% | 0.8% | |
| 22 | 0.4% | 0.6% | |
| 23 | 0.1% | 0.1% | |
| 24 | 0% | 0% |
Bloco de Esquerda
For a full overview of the results for this party, see the Bloco de Esquerda page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 5 | 0.8% | 100% | |
| 6 | 0.1% | 99.2% | |
| 7 | 18% | 99.1% | |
| 8 | 7% | 81% | |
| 9 | 6% | 74% | |
| 10 | 6% | 68% | |
| 11 | 37% | 61% | Median |
| 12 | 14% | 24% | |
| 13 | 3% | 10% | |
| 14 | 3% | 7% | |
| 15 | 1.1% | 4% | |
| 16 | 3% | 3% | |
| 17 | 0.1% | 0.2% | |
| 18 | 0.1% | 0.2% | |
| 19 | 0% | 0% | Last Result |
Coligação Democrática Unitária
For a full overview of the results for this party, see the Coligação Democrática Unitária page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 4 | 0.1% | 100% | |
| 5 | 8% | 99.9% | |
| 6 | 15% | 92% | |
| 7 | 26% | 77% | |
| 8 | 10% | 51% | Median |
| 9 | 23% | 41% | |
| 10 | 9% | 18% | |
| 11 | 3% | 9% | |
| 12 | 3% | 6% | Last Result |
| 13 | 2% | 3% | |
| 14 | 0.4% | 0.9% | |
| 15 | 0.4% | 0.5% | |
| 16 | 0.1% | 0.1% | |
| 17 | 0% | 0% |
Iniciativa Liberal
For a full overview of the results for this party, see the Iniciativa Liberal page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 1 | 1.0% | 100% | Last Result |
| 2 | 12% | 99.0% | |
| 3 | 64% | 87% | Median |
| 4 | 22% | 24% | |
| 5 | 2% | 2% | |
| 6 | 0.2% | 0.2% | |
| 7 | 0% | 0% |
Pessoas–Animais–Natureza
For a full overview of the results for this party, see the Pessoas–Animais–Natureza page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 0 | 5% | 100% | |
| 1 | 35% | 95% | |
| 2 | 55% | 59% | Median |
| 3 | 3% | 4% | |
| 4 | 1.3% | 1.3% | Last Result |
| 5 | 0% | 0.1% | |
| 6 | 0% | 0% |
CDS–Partido Popular
For a full overview of the results for this party, see the CDS–Partido Popular page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 0 | 44% | 100% | |
| 1 | 48% | 56% | Median |
| 2 | 8% | 8% | |
| 3 | 0.1% | 0.2% | |
| 4 | 0.1% | 0.1% | |
| 5 | 0% | 0% | Last Result |
Coalitions

Confidence Intervals
| Coalition | Last Result | Median | Majority? | 80% Confidence Interval | 90% Confidence Interval | 95% Confidence Interval | 99% Confidence Interval |
|---|---|---|---|---|---|---|---|
| Partido Socialista – Bloco de Esquerda – Coligação Democrática Unitária | 139 | 132 | 100% | 127–139 | 125–140 | 124–143 | 122–145 |
| Partido Socialista – Bloco de Esquerda | 127 | 124 | 98% | 120–131 | 117–132 | 116–134 | 114–138 |
| Partido Socialista – Coligação Democrática Unitária | 120 | 122 | 93% | 117–128 | 115–129 | 113–132 | 111–137 |
| Partido Socialista | 108 | 115 | 44% | 109–120 | 106–122 | 105–123 | 103–127 |
| Partido Social Democrata – CDS–Partido Popular | 84 | 78 | 0% | 72–84 | 70–85 | 67–86 | 66–89 |
Partido Socialista – Bloco de Esquerda – Coligação Democrática Unitária

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 117 | 0.1% | 100% | |
| 118 | 0% | 99.9% | |
| 119 | 0% | 99.9% | |
| 120 | 0.2% | 99.9% | |
| 121 | 0.1% | 99.7% | |
| 122 | 0.2% | 99.6% | |
| 123 | 0.3% | 99.3% | |
| 124 | 3% | 99.0% | |
| 125 | 1.0% | 96% | |
| 126 | 2% | 95% | |
| 127 | 4% | 93% | |
| 128 | 6% | 89% | |
| 129 | 15% | 82% | |
| 130 | 5% | 67% | |
| 131 | 3% | 62% | |
| 132 | 11% | 59% | |
| 133 | 5% | 49% | |
| 134 | 5% | 44% | Median |
| 135 | 1.3% | 39% | |
| 136 | 9% | 38% | |
| 137 | 5% | 29% | |
| 138 | 11% | 24% | |
| 139 | 4% | 13% | Last Result |
| 140 | 5% | 9% | |
| 141 | 0.3% | 3% | |
| 142 | 0.2% | 3% | |
| 143 | 0.8% | 3% | |
| 144 | 0.6% | 2% | |
| 145 | 1.2% | 2% | |
| 146 | 0.2% | 0.3% | |
| 147 | 0% | 0.1% | |
| 148 | 0.1% | 0.1% | |
| 149 | 0% | 0% |
Partido Socialista – Bloco de Esquerda

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 109 | 0.1% | 100% | |
| 110 | 0% | 99.9% | |
| 111 | 0.2% | 99.9% | |
| 112 | 0.1% | 99.7% | |
| 113 | 0.1% | 99.6% | |
| 114 | 0.3% | 99.5% | |
| 115 | 2% | 99.3% | |
| 116 | 0.8% | 98% | Majority |
| 117 | 2% | 97% | |
| 118 | 0.9% | 94% | |
| 119 | 3% | 93% | |
| 120 | 10% | 90% | |
| 121 | 11% | 80% | |
| 122 | 6% | 69% | |
| 123 | 5% | 63% | |
| 124 | 9% | 58% | |
| 125 | 3% | 49% | |
| 126 | 6% | 46% | Median |
| 127 | 9% | 40% | Last Result |
| 128 | 3% | 32% | |
| 129 | 4% | 28% | |
| 130 | 6% | 24% | |
| 131 | 11% | 18% | |
| 132 | 3% | 7% | |
| 133 | 0.8% | 4% | |
| 134 | 1.1% | 3% | |
| 135 | 0.2% | 2% | |
| 136 | 0.1% | 2% | |
| 137 | 0.9% | 2% | |
| 138 | 0.1% | 0.6% | |
| 139 | 0.3% | 0.5% | |
| 140 | 0.1% | 0.2% | |
| 141 | 0% | 0.1% | |
| 142 | 0% | 0.1% | |
| 143 | 0% | 0% |
Partido Socialista – Coligação Democrática Unitária

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 107 | 0% | 100% | |
| 108 | 0% | 99.9% | |
| 109 | 0.1% | 99.9% | |
| 110 | 0.3% | 99.9% | |
| 111 | 0.1% | 99.5% | |
| 112 | 0.5% | 99.4% | |
| 113 | 2% | 98.9% | |
| 114 | 1.4% | 96% | |
| 115 | 2% | 95% | |
| 116 | 2% | 93% | Majority |
| 117 | 8% | 92% | |
| 118 | 5% | 83% | |
| 119 | 2% | 79% | |
| 120 | 8% | 77% | Last Result |
| 121 | 9% | 69% | |
| 122 | 12% | 60% | |
| 123 | 5% | 48% | Median |
| 124 | 5% | 43% | |
| 125 | 11% | 39% | |
| 126 | 1.4% | 28% | |
| 127 | 12% | 26% | |
| 128 | 7% | 15% | |
| 129 | 3% | 8% | |
| 130 | 2% | 5% | |
| 131 | 0.2% | 3% | |
| 132 | 0.8% | 3% | |
| 133 | 0.2% | 2% | |
| 134 | 0.1% | 2% | |
| 135 | 0.7% | 2% | |
| 136 | 0.1% | 0.9% | |
| 137 | 0.6% | 0.8% | |
| 138 | 0.1% | 0.2% | |
| 139 | 0% | 0% |
Partido Socialista

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 99 | 0% | 100% | |
| 100 | 0% | 99.9% | |
| 101 | 0.2% | 99.9% | |
| 102 | 0.2% | 99.7% | |
| 103 | 0.1% | 99.5% | |
| 104 | 2% | 99.4% | |
| 105 | 2% | 98% | |
| 106 | 0.8% | 96% | |
| 107 | 1.0% | 95% | |
| 108 | 3% | 94% | Last Result |
| 109 | 3% | 91% | |
| 110 | 5% | 88% | |
| 111 | 11% | 83% | |
| 112 | 7% | 72% | |
| 113 | 9% | 65% | |
| 114 | 5% | 56% | |
| 115 | 7% | 51% | Median |
| 116 | 7% | 44% | Majority |
| 117 | 8% | 37% | |
| 118 | 7% | 30% | |
| 119 | 4% | 23% | |
| 120 | 9% | 19% | |
| 121 | 2% | 9% | |
| 122 | 4% | 7% | |
| 123 | 1.3% | 3% | |
| 124 | 0.2% | 2% | |
| 125 | 0.1% | 2% | |
| 126 | 0.2% | 2% | |
| 127 | 1.2% | 2% | |
| 128 | 0% | 0.4% | |
| 129 | 0.1% | 0.3% | |
| 130 | 0.1% | 0.3% | |
| 131 | 0.2% | 0.2% | |
| 132 | 0% | 0% |
Partido Social Democrata – CDS–Partido Popular

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 63 | 0% | 100% | |
| 64 | 0% | 99.9% | |
| 65 | 0.3% | 99.9% | |
| 66 | 1.1% | 99.6% | |
| 67 | 1.0% | 98% | |
| 68 | 0.2% | 97% | |
| 69 | 0.5% | 97% | |
| 70 | 5% | 97% | |
| 71 | 2% | 92% | |
| 72 | 1.1% | 90% | |
| 73 | 7% | 89% | |
| 74 | 3% | 82% | |
| 75 | 13% | 79% | |
| 76 | 7% | 66% | |
| 77 | 6% | 60% | |
| 78 | 7% | 53% | |
| 79 | 4% | 47% | Median |
| 80 | 8% | 43% | |
| 81 | 9% | 35% | |
| 82 | 5% | 26% | |
| 83 | 7% | 22% | |
| 84 | 9% | 15% | Last Result |
| 85 | 1.2% | 6% | |
| 86 | 2% | 5% | |
| 87 | 0.2% | 2% | |
| 88 | 0.4% | 2% | |
| 89 | 1.4% | 2% | |
| 90 | 0.1% | 0.4% | |
| 91 | 0.2% | 0.3% | |
| 92 | 0% | 0.1% | |
| 93 | 0% | 0.1% | |
| 94 | 0% | 0% |
Technical Information
Opinion Poll
- Polling firm: Eurosondagem
- Commissioner(s): Porto Canal and Sol
- Fieldwork period: 5–8 April 2021
Calculations
- Sample size: 1020
- Simulations done: 131,072
- Error estimate: 3.70%