Opinion Poll by Intercampus for CMTV, Correio da Manhã and Negócios, 14–23 September 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% | 36.8% | 34.3–39.3% | 33.6–40.1% | 33.0–40.7% | 31.9–41.9% |
| Partido Social Democrata | 27.8% | 24.6% | 22.5–27.0% | 21.9–27.6% | 21.4–28.2% | 20.4–29.4% |
| Bloco de Esquerda | 9.5% | 9.7% | 8.3–11.4% | 7.9–11.9% | 7.6–12.3% | 7.0–13.2% |
| Chega | 1.3% | 8.5% | 7.2–10.2% | 6.9–10.6% | 6.6–11.0% | 6.0–11.9% |
| Coligação Democrática Unitária | 6.3% | 5.4% | 4.4–6.8% | 4.1–7.2% | 3.9–7.5% | 3.4–8.2% |
| Iniciativa Liberal | 1.3% | 5.4% | 4.4–6.8% | 4.1–7.2% | 3.9–7.5% | 3.4–8.2% |
| Pessoas–Animais–Natureza | 3.3% | 3.3% | 2.5–4.4% | 2.3–4.7% | 2.1–5.0% | 1.8–5.6% |
| CDS–Partido Popular | 4.2% | 1.5% | 1.0–2.3% | 0.9–2.6% | 0.8–2.8% | 0.6–3.3% |
| LIVRE | 1.1% | 0.3% | 0.2–0.9% | 0.1–1.0% | 0.1–1.2% | 0.0–1.5% |
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 | 107 | 101–117 | 98–117 | 96–121 | 92–122 |
| Partido Social Democrata | 79 | 66 | 60–75 | 58–77 | 57–79 | 55–82 |
| Bloco de Esquerda | 19 | 19 | 16–23 | 15–25 | 14–27 | 12–30 |
| Chega | 1 | 14 | 11–20 | 11–23 | 11–24 | 9–26 |
| Coligação Democrática Unitária | 12 | 8 | 6–13 | 5–14 | 5–15 | 4–16 |
| Iniciativa Liberal | 1 | 8 | 6–12 | 6–12 | 5–13 | 4–14 |
| Pessoas–Animais–Natureza | 4 | 3 | 2–5 | 2–6 | 2–6 | 1–9 |
| CDS–Partido Popular | 5 | 0 | 0–1 | 0–1 | 0–2 | 0–2 |
| LIVRE | 1 | 0 | 0 | 0 | 0–1 | 0–1 |
Partido Socialista
For a full overview of the results for this party, see the Partido Socialista page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 84 | 0% | 100% | |
| 85 | 0% | 99.9% | |
| 86 | 0% | 99.9% | |
| 87 | 0% | 99.9% | |
| 88 | 0.1% | 99.9% | |
| 89 | 0.1% | 99.8% | |
| 90 | 0.1% | 99.7% | |
| 91 | 0.1% | 99.6% | |
| 92 | 0.2% | 99.5% | |
| 93 | 0.2% | 99.3% | |
| 94 | 0.5% | 99.2% | |
| 95 | 0.6% | 98.6% | |
| 96 | 0.7% | 98% | |
| 97 | 1.3% | 97% | |
| 98 | 2% | 96% | |
| 99 | 2% | 94% | |
| 100 | 2% | 92% | |
| 101 | 4% | 91% | |
| 102 | 10% | 87% | |
| 103 | 6% | 77% | |
| 104 | 3% | 71% | |
| 105 | 10% | 68% | |
| 106 | 7% | 57% | |
| 107 | 4% | 51% | Median |
| 108 | 6% | 46% | Last Result |
| 109 | 8% | 40% | |
| 110 | 5% | 32% | |
| 111 | 3% | 27% | |
| 112 | 6% | 23% | |
| 113 | 2% | 18% | |
| 114 | 2% | 15% | |
| 115 | 2% | 14% | |
| 116 | 0.4% | 12% | Majority |
| 117 | 7% | 12% | |
| 118 | 0.4% | 4% | |
| 119 | 0.5% | 4% | |
| 120 | 0.8% | 4% | |
| 121 | 2% | 3% | |
| 122 | 0.3% | 0.7% | |
| 123 | 0.1% | 0.4% | |
| 124 | 0.2% | 0.4% | |
| 125 | 0% | 0.1% | |
| 126 | 0% | 0.1% | |
| 127 | 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 |
|---|---|---|---|
| 52 | 0.1% | 100% | |
| 53 | 0% | 99.9% | |
| 54 | 0.2% | 99.9% | |
| 55 | 0.3% | 99.7% | |
| 56 | 0.7% | 99.3% | |
| 57 | 3% | 98.7% | |
| 58 | 1.0% | 95% | |
| 59 | 4% | 95% | |
| 60 | 2% | 91% | |
| 61 | 2% | 89% | |
| 62 | 4% | 87% | |
| 63 | 7% | 83% | |
| 64 | 5% | 76% | |
| 65 | 9% | 71% | |
| 66 | 13% | 62% | Median |
| 67 | 6% | 49% | |
| 68 | 9% | 42% | |
| 69 | 7% | 33% | |
| 70 | 4% | 26% | |
| 71 | 5% | 22% | |
| 72 | 2% | 17% | |
| 73 | 2% | 15% | |
| 74 | 2% | 13% | |
| 75 | 4% | 11% | |
| 76 | 0.8% | 7% | |
| 77 | 2% | 6% | |
| 78 | 2% | 4% | |
| 79 | 1.4% | 3% | Last Result |
| 80 | 0.3% | 1.1% | |
| 81 | 0.2% | 0.8% | |
| 82 | 0.2% | 0.6% | |
| 83 | 0.2% | 0.4% | |
| 84 | 0% | 0.2% | |
| 85 | 0% | 0.2% | |
| 86 | 0% | 0.1% | |
| 87 | 0.1% | 0.1% | |
| 88 | 0% | 0.1% | |
| 89 | 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 |
|---|---|---|---|
| 11 | 0.2% | 100% | |
| 12 | 0.5% | 99.7% | |
| 13 | 0.5% | 99.3% | |
| 14 | 3% | 98.8% | |
| 15 | 3% | 95% | |
| 16 | 6% | 92% | |
| 17 | 10% | 86% | |
| 18 | 20% | 77% | |
| 19 | 12% | 57% | Last Result, Median |
| 20 | 6% | 45% | |
| 21 | 14% | 38% | |
| 22 | 12% | 24% | |
| 23 | 4% | 12% | |
| 24 | 2% | 8% | |
| 25 | 1.4% | 6% | |
| 26 | 1.2% | 4% | |
| 27 | 2% | 3% | |
| 28 | 0.3% | 1.2% | |
| 29 | 0.3% | 1.0% | |
| 30 | 0.5% | 0.6% | |
| 31 | 0.1% | 0.2% | |
| 32 | 0% | 0.1% | |
| 33 | 0% | 0.1% | |
| 34 | 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 | 0.2% | 100% | |
| 9 | 0.5% | 99.8% | |
| 10 | 0.9% | 99.3% | |
| 11 | 17% | 98% | |
| 12 | 5% | 82% | |
| 13 | 5% | 77% | |
| 14 | 24% | 72% | Median |
| 15 | 6% | 48% | |
| 16 | 7% | 43% | |
| 17 | 4% | 35% | |
| 18 | 12% | 31% | |
| 19 | 7% | 19% | |
| 20 | 4% | 12% | |
| 21 | 2% | 8% | |
| 22 | 0.8% | 6% | |
| 23 | 1.0% | 5% | |
| 24 | 2% | 4% | |
| 25 | 0.9% | 2% | |
| 26 | 0.4% | 0.8% | |
| 27 | 0.3% | 0.4% | |
| 28 | 0% | 0% |
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 |
|---|---|---|---|
| 3 | 0.2% | 100% | |
| 4 | 0.9% | 99.8% | |
| 5 | 6% | 98.9% | |
| 6 | 14% | 93% | |
| 7 | 17% | 78% | |
| 8 | 12% | 62% | Median |
| 9 | 10% | 50% | |
| 10 | 18% | 40% | |
| 11 | 6% | 22% | |
| 12 | 4% | 16% | Last Result |
| 13 | 5% | 12% | |
| 14 | 5% | 7% | |
| 15 | 2% | 3% | |
| 16 | 0.5% | 0.9% | |
| 17 | 0.2% | 0.4% | |
| 18 | 0.2% | 0.2% | |
| 19 | 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 | 0% | 100% | Last Result |
| 2 | 0% | 100% | |
| 3 | 0.1% | 100% | |
| 4 | 1.3% | 99.9% | |
| 5 | 3% | 98.6% | |
| 6 | 36% | 96% | |
| 7 | 6% | 60% | |
| 8 | 10% | 54% | Median |
| 9 | 11% | 44% | |
| 10 | 11% | 33% | |
| 11 | 8% | 22% | |
| 12 | 11% | 14% | |
| 13 | 1.1% | 3% | |
| 14 | 2% | 2% | |
| 15 | 0.1% | 0.2% | |
| 16 | 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 |
|---|---|---|---|
| 1 | 2% | 100% | |
| 2 | 28% | 98% | |
| 3 | 21% | 70% | Median |
| 4 | 35% | 49% | Last Result |
| 5 | 6% | 14% | |
| 6 | 5% | 8% | |
| 7 | 0.3% | 2% | |
| 8 | 0.8% | 2% | |
| 9 | 0.8% | 0.9% | |
| 10 | 0% | 0.1% | |
| 11 | 0.1% | 0.1% | |
| 12 | 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 | 74% | 100% | Median |
| 1 | 23% | 26% | |
| 2 | 3% | 3% | |
| 3 | 0.2% | 0.2% | |
| 4 | 0% | 0% | |
| 5 | 0% | 0% | Last Result |
LIVRE
For a full overview of the results for this party, see the LIVRE page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 0 | 95% | 100% | Median |
| 1 | 5% | 5% | Last Result |
| 2 | 0% | 0% |
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 | 136 | 99.9% | 126–146 | 125–147 | 124–148 | 119–150 |
| Partido Socialista – Bloco de Esquerda | 127 | 126 | 97% | 119–138 | 117–138 | 115–139 | 111–140 |
| Partido Socialista – Coligação Democrática Unitária | 120 | 115 | 50% | 109–125 | 107–127 | 104–129 | 100–131 |
| Partido Socialista | 108 | 107 | 12% | 101–117 | 98–117 | 96–121 | 92–122 |
| Partido Social Democrata – CDS–Partido Popular | 84 | 67 | 0% | 60–75 | 58–78 | 57–79 | 55–82 |
Partido Socialista – Bloco de Esquerda – Coligação Democrática Unitária

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 112 | 0% | 100% | |
| 113 | 0% | 99.9% | |
| 114 | 0.1% | 99.9% | |
| 115 | 0% | 99.9% | |
| 116 | 0.1% | 99.9% | Majority |
| 117 | 0.1% | 99.8% | |
| 118 | 0.1% | 99.7% | |
| 119 | 0.2% | 99.7% | |
| 120 | 0.1% | 99.5% | |
| 121 | 0.5% | 99.4% | |
| 122 | 0.8% | 98.9% | |
| 123 | 0.5% | 98% | |
| 124 | 1.3% | 98% | |
| 125 | 2% | 96% | |
| 126 | 5% | 94% | |
| 127 | 1.5% | 90% | |
| 128 | 2% | 88% | |
| 129 | 2% | 86% | |
| 130 | 4% | 84% | |
| 131 | 4% | 79% | |
| 132 | 5% | 76% | |
| 133 | 5% | 71% | |
| 134 | 9% | 66% | Median |
| 135 | 5% | 57% | |
| 136 | 10% | 52% | |
| 137 | 11% | 43% | |
| 138 | 4% | 31% | |
| 139 | 6% | 27% | Last Result |
| 140 | 3% | 21% | |
| 141 | 2% | 19% | |
| 142 | 0.7% | 16% | |
| 143 | 1.3% | 16% | |
| 144 | 1.2% | 14% | |
| 145 | 1.3% | 13% | |
| 146 | 5% | 12% | |
| 147 | 3% | 7% | |
| 148 | 3% | 4% | |
| 149 | 0.4% | 0.9% | |
| 150 | 0.3% | 0.5% | |
| 151 | 0% | 0.2% | |
| 152 | 0.1% | 0.2% | |
| 153 | 0% | 0.1% | |
| 154 | 0% | 0% |
Partido Socialista – Bloco de Esquerda

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 103 | 0% | 100% | |
| 104 | 0% | 99.9% | |
| 105 | 0% | 99.9% | |
| 106 | 0% | 99.9% | |
| 107 | 0% | 99.9% | |
| 108 | 0.1% | 99.8% | |
| 109 | 0.1% | 99.8% | |
| 110 | 0.1% | 99.7% | |
| 111 | 0.2% | 99.6% | |
| 112 | 0.2% | 99.4% | |
| 113 | 0.3% | 99.3% | |
| 114 | 1.0% | 99.0% | |
| 115 | 1.4% | 98% | |
| 116 | 1.4% | 97% | Majority |
| 117 | 0.9% | 95% | |
| 118 | 2% | 94% | |
| 119 | 6% | 93% | |
| 120 | 2% | 87% | |
| 121 | 2% | 85% | |
| 122 | 5% | 84% | |
| 123 | 4% | 79% | |
| 124 | 13% | 75% | |
| 125 | 6% | 62% | |
| 126 | 10% | 56% | Median |
| 127 | 6% | 45% | Last Result |
| 128 | 8% | 39% | |
| 129 | 4% | 31% | |
| 130 | 5% | 27% | |
| 131 | 2% | 22% | |
| 132 | 1.3% | 19% | |
| 133 | 2% | 18% | |
| 134 | 1.2% | 16% | |
| 135 | 1.5% | 15% | |
| 136 | 1.4% | 14% | |
| 137 | 1.4% | 12% | |
| 138 | 7% | 11% | |
| 139 | 3% | 4% | |
| 140 | 0.3% | 0.8% | |
| 141 | 0.1% | 0.5% | |
| 142 | 0.1% | 0.3% | |
| 143 | 0.2% | 0.3% | |
| 144 | 0% | 0.1% | |
| 145 | 0% | 0.1% | |
| 146 | 0% | 0% |
Partido Socialista – Coligação Democrática Unitária

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 94 | 0% | 100% | |
| 95 | 0.1% | 99.9% | |
| 96 | 0% | 99.9% | |
| 97 | 0.1% | 99.8% | |
| 98 | 0.1% | 99.7% | |
| 99 | 0.1% | 99.7% | |
| 100 | 0.3% | 99.5% | |
| 101 | 0.3% | 99.3% | |
| 102 | 0.3% | 99.0% | |
| 103 | 1.1% | 98.7% | |
| 104 | 0.3% | 98% | |
| 105 | 1.0% | 97% | |
| 106 | 1.1% | 96% | |
| 107 | 2% | 95% | |
| 108 | 3% | 93% | |
| 109 | 5% | 91% | |
| 110 | 4% | 85% | |
| 111 | 2% | 81% | |
| 112 | 8% | 79% | |
| 113 | 4% | 72% | |
| 114 | 11% | 68% | |
| 115 | 6% | 56% | Median |
| 116 | 4% | 50% | Majority |
| 117 | 6% | 46% | |
| 118 | 5% | 40% | |
| 119 | 8% | 34% | |
| 120 | 4% | 27% | Last Result |
| 121 | 5% | 23% | |
| 122 | 3% | 18% | |
| 123 | 2% | 15% | |
| 124 | 1.0% | 13% | |
| 125 | 4% | 12% | |
| 126 | 0.9% | 8% | |
| 127 | 4% | 7% | |
| 128 | 0.3% | 4% | |
| 129 | 2% | 3% | |
| 130 | 0.3% | 0.9% | |
| 131 | 0.2% | 0.6% | |
| 132 | 0.3% | 0.4% | |
| 133 | 0% | 0.1% | |
| 134 | 0% | 0.1% | |
| 135 | 0% | 0.1% | |
| 136 | 0% | 0% |
Partido Socialista

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 84 | 0% | 100% | |
| 85 | 0% | 99.9% | |
| 86 | 0% | 99.9% | |
| 87 | 0% | 99.9% | |
| 88 | 0.1% | 99.9% | |
| 89 | 0.1% | 99.8% | |
| 90 | 0.1% | 99.7% | |
| 91 | 0.1% | 99.6% | |
| 92 | 0.2% | 99.5% | |
| 93 | 0.2% | 99.3% | |
| 94 | 0.5% | 99.2% | |
| 95 | 0.6% | 98.6% | |
| 96 | 0.7% | 98% | |
| 97 | 1.3% | 97% | |
| 98 | 2% | 96% | |
| 99 | 2% | 94% | |
| 100 | 2% | 92% | |
| 101 | 4% | 91% | |
| 102 | 10% | 87% | |
| 103 | 6% | 77% | |
| 104 | 3% | 71% | |
| 105 | 10% | 68% | |
| 106 | 7% | 57% | |
| 107 | 4% | 51% | Median |
| 108 | 6% | 46% | Last Result |
| 109 | 8% | 40% | |
| 110 | 5% | 32% | |
| 111 | 3% | 27% | |
| 112 | 6% | 23% | |
| 113 | 2% | 18% | |
| 114 | 2% | 15% | |
| 115 | 2% | 14% | |
| 116 | 0.4% | 12% | Majority |
| 117 | 7% | 12% | |
| 118 | 0.4% | 4% | |
| 119 | 0.5% | 4% | |
| 120 | 0.8% | 4% | |
| 121 | 2% | 3% | |
| 122 | 0.3% | 0.7% | |
| 123 | 0.1% | 0.4% | |
| 124 | 0.2% | 0.4% | |
| 125 | 0% | 0.1% | |
| 126 | 0% | 0.1% | |
| 127 | 0% | 0% |
Partido Social Democrata – CDS–Partido Popular

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 52 | 0.1% | 100% | |
| 53 | 0% | 99.9% | |
| 54 | 0.2% | 99.9% | |
| 55 | 0.2% | 99.7% | |
| 56 | 0.6% | 99.5% | |
| 57 | 3% | 98.9% | |
| 58 | 1.0% | 96% | |
| 59 | 4% | 95% | |
| 60 | 2% | 91% | |
| 61 | 2% | 89% | |
| 62 | 4% | 87% | |
| 63 | 7% | 84% | |
| 64 | 4% | 77% | |
| 65 | 9% | 73% | |
| 66 | 12% | 64% | Median |
| 67 | 9% | 52% | |
| 68 | 6% | 44% | |
| 69 | 9% | 38% | |
| 70 | 7% | 29% | |
| 71 | 4% | 22% | |
| 72 | 3% | 19% | |
| 73 | 2% | 16% | |
| 74 | 1.4% | 13% | |
| 75 | 4% | 12% | |
| 76 | 2% | 8% | |
| 77 | 0.7% | 6% | |
| 78 | 2% | 5% | |
| 79 | 2% | 4% | |
| 80 | 0.7% | 2% | |
| 81 | 0.3% | 1.0% | |
| 82 | 0.3% | 0.7% | |
| 83 | 0.2% | 0.5% | |
| 84 | 0.1% | 0.3% | Last Result |
| 85 | 0% | 0.2% | |
| 86 | 0% | 0.1% | |
| 87 | 0% | 0.1% | |
| 88 | 0% | 0.1% | |
| 89 | 0% | 0.1% | |
| 90 | 0% | 0% |
Technical Information
Opinion Poll
- Polling firm: Intercampus
- Commissioner(s): CMTV, Correio da Manhã and Negócios
- Fieldwork period: 14–23 September 2021
Calculations
- Sample size: 609
- Simulations done: 1,048,576
- Error estimate: 2.56%