Opinion Poll by Aximage for Correio da Manhã, 1–2 September 2018
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 | 32.3% | 40.0% | 37.4–42.6% | 36.7–43.3% | 36.1–43.9% | 34.9–45.2% | 
| Partido Social Democrata | 36.9% | 24.0% | 21.9–26.4% | 21.3–27.1% | 20.8–27.6% | 19.8–28.8% | 
| CDS–Partido Popular | 36.9% | 9.1% | 7.8–10.8% | 7.4–11.3% | 7.1–11.7% | 6.5–12.5% | 
| Bloco de Esquerda | 10.2% | 7.8% | 6.6–9.4% | 6.2–9.8% | 5.9–10.2% | 5.4–11.0% | 
| Coligação Democrática Unitária | 8.2% | 7.1% | 5.9–8.7% | 5.6–9.1% | 5.3–9.5% | 4.8–10.3% | 
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 | 86 | 115 | 107–123 | 106–125 | 104–128 | 100–132 | 
| Partido Social Democrata | 89 | 67 | 59–74 | 58–76 | 56–78 | 54–81 | 
| CDS–Partido Popular | 18 | 19 | 15–24 | 13–27 | 12–28 | 10–30 | 
| Bloco de Esquerda | 19 | 15 | 10–18 | 10–19 | 9–22 | 8–24 | 
| Coligação Democrática Unitária | 17 | 13 | 9–17 | 8–19 | 7–20 | 6–21 | 
Partido Socialista
For a full overview of the results for this party, see the Partido Socialista page.

| Number of Seats | Probability | Accumulated | Special Marks | 
|---|---|---|---|
| 86 | 0% | 100% | Last Result | 
| 87 | 0% | 100% | |
| 88 | 0% | 100% | |
| 89 | 0% | 100% | |
| 90 | 0% | 100% | |
| 91 | 0% | 100% | |
| 92 | 0% | 100% | |
| 93 | 0% | 100% | |
| 94 | 0% | 100% | |
| 95 | 0% | 100% | |
| 96 | 0% | 100% | |
| 97 | 0.1% | 99.9% | |
| 98 | 0.1% | 99.9% | |
| 99 | 0.2% | 99.8% | |
| 100 | 0.2% | 99.6% | |
| 101 | 0.2% | 99.4% | |
| 102 | 0.9% | 99.2% | |
| 103 | 0.6% | 98% | |
| 104 | 1.0% | 98% | |
| 105 | 1.0% | 97% | |
| 106 | 2% | 96% | |
| 107 | 4% | 93% | |
| 108 | 2% | 89% | |
| 109 | 3% | 87% | |
| 110 | 7% | 85% | |
| 111 | 2% | 77% | |
| 112 | 7% | 75% | |
| 113 | 6% | 68% | |
| 114 | 8% | 61% | |
| 115 | 6% | 54% | Median | 
| 116 | 10% | 48% | Majority | 
| 117 | 9% | 38% | |
| 118 | 3% | 30% | |
| 119 | 6% | 27% | |
| 120 | 4% | 21% | |
| 121 | 4% | 17% | |
| 122 | 2% | 13% | |
| 123 | 3% | 11% | |
| 124 | 2% | 8% | |
| 125 | 2% | 6% | |
| 126 | 2% | 5% | |
| 127 | 0.6% | 3% | |
| 128 | 0.9% | 3% | |
| 129 | 0.5% | 2% | |
| 130 | 0.5% | 1.3% | |
| 131 | 0.2% | 0.7% | |
| 132 | 0.1% | 0.5% | |
| 133 | 0.2% | 0.4% | |
| 134 | 0.1% | 0.2% | |
| 135 | 0% | 0.1% | |
| 136 | 0% | 0.1% | |
| 137 | 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 | 
|---|---|---|---|
| 51 | 0.1% | 100% | |
| 52 | 0.3% | 99.9% | |
| 53 | 0.1% | 99.6% | |
| 54 | 1.2% | 99.5% | |
| 55 | 0.7% | 98% | |
| 56 | 2% | 98% | |
| 57 | 0.8% | 96% | |
| 58 | 3% | 95% | |
| 59 | 3% | 92% | |
| 60 | 2% | 89% | |
| 61 | 7% | 87% | |
| 62 | 4% | 80% | |
| 63 | 4% | 76% | |
| 64 | 7% | 72% | |
| 65 | 7% | 66% | |
| 66 | 6% | 59% | |
| 67 | 7% | 53% | Median | 
| 68 | 12% | 46% | |
| 69 | 6% | 34% | |
| 70 | 5% | 28% | |
| 71 | 5% | 24% | |
| 72 | 3% | 19% | |
| 73 | 4% | 15% | |
| 74 | 4% | 12% | |
| 75 | 2% | 8% | |
| 76 | 2% | 5% | |
| 77 | 0.8% | 3% | |
| 78 | 1.2% | 3% | |
| 79 | 0.4% | 1.3% | |
| 80 | 0.4% | 0.9% | |
| 81 | 0.2% | 0.5% | |
| 82 | 0.2% | 0.4% | |
| 83 | 0.1% | 0.2% | |
| 84 | 0% | 0.1% | |
| 85 | 0% | 0.1% | |
| 86 | 0% | 0% | |
| 87 | 0% | 0% | |
| 88 | 0% | 0% | |
| 89 | 0% | 0% | Last Result | 
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 | 
|---|---|---|---|
| 9 | 0.1% | 100% | |
| 10 | 1.0% | 99.9% | |
| 11 | 1.3% | 98.9% | |
| 12 | 2% | 98% | |
| 13 | 2% | 96% | |
| 14 | 3% | 94% | |
| 15 | 4% | 91% | |
| 16 | 3% | 87% | |
| 17 | 5% | 84% | |
| 18 | 14% | 80% | Last Result | 
| 19 | 25% | 65% | Median | 
| 20 | 7% | 41% | |
| 21 | 9% | 33% | |
| 22 | 4% | 25% | |
| 23 | 7% | 21% | |
| 24 | 5% | 13% | |
| 25 | 2% | 8% | |
| 26 | 0.9% | 6% | |
| 27 | 2% | 5% | |
| 28 | 1.4% | 4% | |
| 29 | 1.5% | 2% | |
| 30 | 0.8% | 0.9% | |
| 31 | 0.1% | 0.1% | |
| 32 | 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 | 0.1% | 100% | |
| 6 | 0% | 99.9% | |
| 7 | 0.1% | 99.9% | |
| 8 | 0.7% | 99.8% | |
| 9 | 2% | 99.1% | |
| 10 | 8% | 97% | |
| 11 | 2% | 89% | |
| 12 | 6% | 88% | |
| 13 | 13% | 82% | |
| 14 | 12% | 69% | |
| 15 | 10% | 56% | Median | 
| 16 | 8% | 46% | |
| 17 | 8% | 38% | |
| 18 | 22% | 30% | |
| 19 | 3% | 8% | Last Result | 
| 20 | 1.4% | 5% | |
| 21 | 0.8% | 3% | |
| 22 | 1.0% | 3% | |
| 23 | 0.9% | 2% | |
| 24 | 0.5% | 0.6% | |
| 25 | 0.1% | 0.1% | |
| 26 | 0% | 0.1% | |
| 27 | 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 | 
|---|---|---|---|
| 5 | 0.1% | 100% | |
| 6 | 1.3% | 99.9% | |
| 7 | 1.2% | 98.6% | |
| 8 | 3% | 97% | |
| 9 | 5% | 94% | |
| 10 | 4% | 89% | |
| 11 | 12% | 85% | |
| 12 | 8% | 74% | |
| 13 | 19% | 66% | Median | 
| 14 | 11% | 48% | |
| 15 | 6% | 37% | |
| 16 | 6% | 30% | |
| 17 | 16% | 24% | Last Result | 
| 18 | 3% | 8% | |
| 19 | 2% | 5% | |
| 20 | 2% | 3% | |
| 21 | 0.5% | 0.8% | |
| 22 | 0.2% | 0.4% | |
| 23 | 0.1% | 0.2% | |
| 24 | 0.1% | 0.1% | |
| 25 | 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 | 122 | 143 | 100% | 137–152 | 135–154 | 133–156 | 130–159 | 
| Partido Socialista – Bloco de Esquerda | 105 | 130 | 99.5% | 122–138 | 120–141 | 119–143 | 116–146 | 
| Partido Socialista – Coligação Democrática Unitária | 103 | 128 | 98.8% | 122–136 | 120–139 | 118–141 | 114–145 | 
| Partido Socialista | 86 | 115 | 48% | 107–123 | 106–125 | 104–128 | 100–132 | 
| Partido Social Democrata – CDS–Partido Popular | 107 | 87 | 0% | 78–93 | 76–95 | 74–97 | 71–100 | 
Partido Socialista – Bloco de Esquerda – Coligação Democrática Unitária

| Number of Seats | Probability | Accumulated | Special Marks | 
|---|---|---|---|
| 122 | 0% | 100% | Last Result | 
| 123 | 0% | 100% | |
| 124 | 0% | 100% | |
| 125 | 0% | 100% | |
| 126 | 0% | 99.9% | |
| 127 | 0.1% | 99.9% | |
| 128 | 0.1% | 99.8% | |
| 129 | 0.2% | 99.7% | |
| 130 | 0.1% | 99.5% | |
| 131 | 0.8% | 99.4% | |
| 132 | 0.6% | 98.6% | |
| 133 | 1.0% | 98% | |
| 134 | 1.5% | 97% | |
| 135 | 2% | 96% | |
| 136 | 3% | 94% | |
| 137 | 4% | 91% | |
| 138 | 5% | 87% | |
| 139 | 5% | 81% | |
| 140 | 7% | 77% | |
| 141 | 5% | 70% | |
| 142 | 7% | 65% | |
| 143 | 8% | 58% | Median | 
| 144 | 7% | 50% | |
| 145 | 5% | 43% | |
| 146 | 8% | 38% | |
| 147 | 6% | 30% | |
| 148 | 3% | 24% | |
| 149 | 3% | 21% | |
| 150 | 5% | 18% | |
| 151 | 2% | 13% | |
| 152 | 3% | 10% | |
| 153 | 1.4% | 8% | |
| 154 | 2% | 6% | |
| 155 | 0.8% | 4% | |
| 156 | 2% | 4% | |
| 157 | 0.7% | 2% | |
| 158 | 0.5% | 1.4% | |
| 159 | 0.5% | 0.8% | |
| 160 | 0.1% | 0.4% | |
| 161 | 0.1% | 0.2% | |
| 162 | 0.1% | 0.2% | |
| 163 | 0% | 0.1% | |
| 164 | 0% | 0% | 
Partido Socialista – Bloco de Esquerda

| Number of Seats | Probability | Accumulated | Special Marks | 
|---|---|---|---|
| 105 | 0% | 100% | Last Result | 
| 106 | 0% | 100% | |
| 107 | 0% | 100% | |
| 108 | 0% | 100% | |
| 109 | 0% | 100% | |
| 110 | 0% | 100% | |
| 111 | 0% | 100% | |
| 112 | 0% | 99.9% | |
| 113 | 0.1% | 99.9% | |
| 114 | 0.1% | 99.8% | |
| 115 | 0.2% | 99.7% | |
| 116 | 0.3% | 99.5% | Majority | 
| 117 | 0.4% | 99.2% | |
| 118 | 0.7% | 98.8% | |
| 119 | 1.4% | 98% | |
| 120 | 2% | 97% | |
| 121 | 2% | 94% | |
| 122 | 2% | 92% | |
| 123 | 3% | 90% | |
| 124 | 4% | 86% | |
| 125 | 4% | 82% | |
| 126 | 8% | 78% | |
| 127 | 5% | 70% | |
| 128 | 4% | 65% | |
| 129 | 6% | 61% | |
| 130 | 9% | 55% | Median | 
| 131 | 6% | 47% | |
| 132 | 5% | 40% | |
| 133 | 6% | 35% | |
| 134 | 6% | 29% | |
| 135 | 2% | 23% | |
| 136 | 5% | 21% | |
| 137 | 3% | 15% | |
| 138 | 2% | 12% | |
| 139 | 2% | 10% | |
| 140 | 3% | 8% | |
| 141 | 1.1% | 5% | |
| 142 | 1.3% | 4% | |
| 143 | 0.9% | 3% | |
| 144 | 0.7% | 2% | |
| 145 | 0.6% | 1.3% | |
| 146 | 0.2% | 0.7% | |
| 147 | 0.2% | 0.5% | |
| 148 | 0.1% | 0.2% | |
| 149 | 0.1% | 0.2% | |
| 150 | 0% | 0.1% | |
| 151 | 0% | 0% | 
Partido Socialista – Coligação Democrática Unitária

| Number of Seats | Probability | Accumulated | Special Marks | 
|---|---|---|---|
| 103 | 0% | 100% | Last Result | 
| 104 | 0% | 100% | |
| 105 | 0% | 100% | |
| 106 | 0% | 100% | |
| 107 | 0% | 100% | |
| 108 | 0% | 100% | |
| 109 | 0% | 100% | |
| 110 | 0.1% | 99.9% | |
| 111 | 0.1% | 99.9% | |
| 112 | 0.1% | 99.8% | |
| 113 | 0.2% | 99.7% | |
| 114 | 0.2% | 99.5% | |
| 115 | 0.5% | 99.3% | |
| 116 | 0.4% | 98.8% | Majority | 
| 117 | 0.5% | 98% | |
| 118 | 2% | 98% | |
| 119 | 1.0% | 96% | |
| 120 | 2% | 95% | |
| 121 | 3% | 94% | |
| 122 | 3% | 91% | |
| 123 | 4% | 88% | |
| 124 | 4% | 83% | |
| 125 | 6% | 79% | |
| 126 | 8% | 73% | |
| 127 | 6% | 65% | |
| 128 | 9% | 59% | Median | 
| 129 | 9% | 50% | |
| 130 | 7% | 41% | |
| 131 | 5% | 34% | |
| 132 | 6% | 28% | |
| 133 | 5% | 23% | |
| 134 | 4% | 18% | |
| 135 | 2% | 14% | |
| 136 | 3% | 12% | |
| 137 | 2% | 9% | |
| 138 | 2% | 7% | |
| 139 | 1.5% | 6% | |
| 140 | 1.2% | 4% | |
| 141 | 1.5% | 3% | |
| 142 | 0.6% | 2% | |
| 143 | 0.4% | 1.2% | |
| 144 | 0.3% | 0.8% | |
| 145 | 0.2% | 0.5% | |
| 146 | 0.1% | 0.3% | |
| 147 | 0.1% | 0.2% | |
| 148 | 0% | 0.1% | |
| 149 | 0% | 0% | 
Partido Socialista

| Number of Seats | Probability | Accumulated | Special Marks | 
|---|---|---|---|
| 86 | 0% | 100% | Last Result | 
| 87 | 0% | 100% | |
| 88 | 0% | 100% | |
| 89 | 0% | 100% | |
| 90 | 0% | 100% | |
| 91 | 0% | 100% | |
| 92 | 0% | 100% | |
| 93 | 0% | 100% | |
| 94 | 0% | 100% | |
| 95 | 0% | 100% | |
| 96 | 0% | 100% | |
| 97 | 0.1% | 99.9% | |
| 98 | 0.1% | 99.9% | |
| 99 | 0.2% | 99.8% | |
| 100 | 0.2% | 99.6% | |
| 101 | 0.2% | 99.4% | |
| 102 | 0.9% | 99.2% | |
| 103 | 0.6% | 98% | |
| 104 | 1.0% | 98% | |
| 105 | 1.0% | 97% | |
| 106 | 2% | 96% | |
| 107 | 4% | 93% | |
| 108 | 2% | 89% | |
| 109 | 3% | 87% | |
| 110 | 7% | 85% | |
| 111 | 2% | 77% | |
| 112 | 7% | 75% | |
| 113 | 6% | 68% | |
| 114 | 8% | 61% | |
| 115 | 6% | 54% | Median | 
| 116 | 10% | 48% | Majority | 
| 117 | 9% | 38% | |
| 118 | 3% | 30% | |
| 119 | 6% | 27% | |
| 120 | 4% | 21% | |
| 121 | 4% | 17% | |
| 122 | 2% | 13% | |
| 123 | 3% | 11% | |
| 124 | 2% | 8% | |
| 125 | 2% | 6% | |
| 126 | 2% | 5% | |
| 127 | 0.6% | 3% | |
| 128 | 0.9% | 3% | |
| 129 | 0.5% | 2% | |
| 130 | 0.5% | 1.3% | |
| 131 | 0.2% | 0.7% | |
| 132 | 0.1% | 0.5% | |
| 133 | 0.2% | 0.4% | |
| 134 | 0.1% | 0.2% | |
| 135 | 0% | 0.1% | |
| 136 | 0% | 0.1% | |
| 137 | 0% | 0% | 
Partido Social Democrata – CDS–Partido Popular

| Number of Seats | Probability | Accumulated | Special Marks | 
|---|---|---|---|
| 67 | 0% | 100% | |
| 68 | 0.1% | 99.9% | |
| 69 | 0.1% | 99.8% | |
| 70 | 0.1% | 99.8% | |
| 71 | 0.5% | 99.6% | |
| 72 | 0.5% | 99.2% | |
| 73 | 0.7% | 98.6% | |
| 74 | 2% | 98% | |
| 75 | 0.8% | 96% | |
| 76 | 2% | 96% | |
| 77 | 1.3% | 94% | |
| 78 | 3% | 92% | |
| 79 | 2% | 90% | |
| 80 | 5% | 87% | |
| 81 | 3% | 82% | |
| 82 | 3% | 79% | |
| 83 | 6% | 76% | |
| 84 | 8% | 70% | |
| 85 | 5% | 62% | |
| 86 | 7% | 57% | Median | 
| 87 | 8% | 50% | |
| 88 | 7% | 42% | |
| 89 | 5% | 35% | |
| 90 | 7% | 30% | |
| 91 | 5% | 23% | |
| 92 | 5% | 19% | |
| 93 | 4% | 13% | |
| 94 | 3% | 9% | |
| 95 | 2% | 6% | |
| 96 | 1.5% | 4% | |
| 97 | 1.0% | 3% | |
| 98 | 0.6% | 2% | |
| 99 | 0.8% | 1.4% | |
| 100 | 0.1% | 0.6% | |
| 101 | 0.2% | 0.5% | |
| 102 | 0.1% | 0.3% | |
| 103 | 0.1% | 0.2% | |
| 104 | 0% | 0.1% | |
| 105 | 0% | 0.1% | |
| 106 | 0% | 0% | |
| 107 | 0% | 0% | Last Result | 
Technical Information
Opinion Poll
- Polling firm: Aximage
 - Commissioner(s): Correio da Manhã
 - Fieldwork period: 1–2 September 2018
 
Calculations
- Sample size: 603
 - Simulations done: 131,072
 - Error estimate: 1.07%