Opinion Poll by Kantar TNS for Helsingin Sanomat, 19 March–12 April 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 |
|---|---|---|---|---|---|---|
| Suomen Sosialidemokraattinen Puolue | 16.5% | 21.4% | 20.4–22.5% | 20.1–22.8% | 19.8–23.1% | 19.3–23.6% |
| Kansallinen Kokoomus | 18.2% | 20.6% | 19.6–21.7% | 19.3–22.0% | 19.0–22.3% | 18.5–22.8% |
| Suomen Keskusta | 21.1% | 15.7% | 14.8–16.7% | 14.5–17.0% | 14.3–17.2% | 13.9–17.7% |
| Vihreä liitto | 8.5% | 14.0% | 13.1–15.0% | 12.9–15.2% | 12.7–15.5% | 12.3–15.9% |
| Vasemmistoliitto | 7.1% | 8.9% | 8.2–9.7% | 8.0–9.9% | 7.8–10.1% | 7.5–10.5% |
| Perussuomalaiset | 17.6% | 8.1% | 7.4–8.9% | 7.3–9.1% | 7.1–9.3% | 6.8–9.6% |
| Svenska folkpartiet i Finland | 4.9% | 4.2% | 3.7–4.8% | 3.6–4.9% | 3.5–5.1% | 3.2–5.4% |
| Kristillisdemokraatit | 3.5% | 3.5% | 3.1–4.0% | 2.9–4.2% | 2.8–4.3% | 2.6–4.6% |
| Sininen tulevaisuus | 0.0% | 1.6% | 1.3–2.0% | 1.2–2.1% | 1.2–2.2% | 1.1–2.4% |
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 |
|---|---|---|---|---|---|---|
| Suomen Sosialidemokraattinen Puolue | 34 | 47 | 45–50 | 45–51 | 43–52 | 42–53 |
| Kansallinen Kokoomus | 37 | 45 | 41–48 | 40–49 | 40–49 | 38–50 |
| Suomen Keskusta | 49 | 35 | 34–38 | 34–39 | 34–40 | 32–42 |
| Vihreä liitto | 15 | 28 | 25–30 | 25–31 | 24–31 | 23–31 |
| Vasemmistoliitto | 12 | 17 | 16–19 | 15–20 | 14–20 | 13–21 |
| Perussuomalaiset | 38 | 14 | 12–16 | 12–17 | 12–18 | 12–20 |
| Svenska folkpartiet i Finland | 9 | 8 | 7–10 | 7–10 | 6–11 | 6–11 |
| Kristillisdemokraatit | 5 | 5 | 2–6 | 2–6 | 2–6 | 0–6 |
| Sininen tulevaisuus | 0 | 0 | 0 | 0 | 0 | 0 |
Suomen Sosialidemokraattinen Puolue
For a full overview of the results for this party, see the Suomen Sosialidemokraattinen Puolue page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 34 | 0% | 100% | Last Result |
| 35 | 0% | 100% | |
| 36 | 0% | 100% | |
| 37 | 0% | 100% | |
| 38 | 0% | 100% | |
| 39 | 0% | 100% | |
| 40 | 0% | 100% | |
| 41 | 0.1% | 100% | |
| 42 | 1.4% | 99.9% | |
| 43 | 1.1% | 98% | |
| 44 | 2% | 97% | |
| 45 | 8% | 95% | |
| 46 | 10% | 87% | |
| 47 | 33% | 77% | Median |
| 48 | 23% | 44% | |
| 49 | 7% | 20% | |
| 50 | 4% | 14% | |
| 51 | 5% | 9% | |
| 52 | 4% | 5% | |
| 53 | 0.5% | 0.9% | |
| 54 | 0.1% | 0.4% | |
| 55 | 0.2% | 0.2% | |
| 56 | 0% | 0% |
Kansallinen Kokoomus
For a full overview of the results for this party, see the Kansallinen Kokoomus page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 37 | 0.4% | 100% | Last Result |
| 38 | 0.4% | 99.6% | |
| 39 | 1.4% | 99.1% | |
| 40 | 4% | 98% | |
| 41 | 6% | 94% | |
| 42 | 12% | 88% | |
| 43 | 10% | 76% | |
| 44 | 8% | 66% | |
| 45 | 15% | 58% | Median |
| 46 | 9% | 44% | |
| 47 | 8% | 35% | |
| 48 | 19% | 27% | |
| 49 | 7% | 8% | |
| 50 | 0.7% | 0.9% | |
| 51 | 0.2% | 0.2% | |
| 52 | 0% | 0% |
Suomen Keskusta
For a full overview of the results for this party, see the Suomen Keskusta page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 31 | 0.3% | 100% | |
| 32 | 0.2% | 99.7% | |
| 33 | 1.3% | 99.4% | |
| 34 | 36% | 98% | |
| 35 | 28% | 63% | Median |
| 36 | 12% | 35% | |
| 37 | 8% | 23% | |
| 38 | 6% | 16% | |
| 39 | 6% | 10% | |
| 40 | 2% | 4% | |
| 41 | 0.7% | 2% | |
| 42 | 0.6% | 0.8% | |
| 43 | 0.1% | 0.2% | |
| 44 | 0.1% | 0.1% | |
| 45 | 0% | 0% | |
| 46 | 0% | 0% | |
| 47 | 0% | 0% | |
| 48 | 0% | 0% | |
| 49 | 0% | 0% | Last Result |
Vihreä liitto
For a full overview of the results for this party, see the Vihreä liitto page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 15 | 0% | 100% | Last Result |
| 16 | 0% | 100% | |
| 17 | 0% | 100% | |
| 18 | 0% | 100% | |
| 19 | 0% | 100% | |
| 20 | 0% | 100% | |
| 21 | 0% | 100% | |
| 22 | 0.4% | 100% | |
| 23 | 2% | 99.6% | |
| 24 | 3% | 98% | |
| 25 | 19% | 95% | |
| 26 | 11% | 77% | |
| 27 | 10% | 65% | |
| 28 | 32% | 55% | Median |
| 29 | 7% | 23% | |
| 30 | 10% | 17% | |
| 31 | 7% | 7% | |
| 32 | 0.1% | 0.1% | |
| 33 | 0% | 0% |
Vasemmistoliitto
For a full overview of the results for this party, see the Vasemmistoliitto page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 12 | 0.2% | 100% | Last Result |
| 13 | 1.5% | 99.8% | |
| 14 | 3% | 98% | |
| 15 | 2% | 95% | |
| 16 | 17% | 93% | |
| 17 | 60% | 76% | Median |
| 18 | 6% | 16% | |
| 19 | 4% | 10% | |
| 20 | 5% | 6% | |
| 21 | 0.9% | 1.0% | |
| 22 | 0.1% | 0.1% | |
| 23 | 0% | 0% |
Perussuomalaiset
For a full overview of the results for this party, see the Perussuomalaiset page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 10 | 0.3% | 100% | |
| 11 | 0.2% | 99.7% | |
| 12 | 12% | 99.6% | |
| 13 | 12% | 88% | |
| 14 | 44% | 76% | Median |
| 15 | 16% | 32% | |
| 16 | 9% | 16% | |
| 17 | 3% | 7% | |
| 18 | 2% | 4% | |
| 19 | 2% | 2% | |
| 20 | 0.4% | 0.6% | |
| 21 | 0.2% | 0.2% | |
| 22 | 0% | 0% | |
| 23 | 0% | 0% | |
| 24 | 0% | 0% | |
| 25 | 0% | 0% | |
| 26 | 0% | 0% | |
| 27 | 0% | 0% | |
| 28 | 0% | 0% | |
| 29 | 0% | 0% | |
| 30 | 0% | 0% | |
| 31 | 0% | 0% | |
| 32 | 0% | 0% | |
| 33 | 0% | 0% | |
| 34 | 0% | 0% | |
| 35 | 0% | 0% | |
| 36 | 0% | 0% | |
| 37 | 0% | 0% | |
| 38 | 0% | 0% | Last Result |
Svenska folkpartiet i Finland
For a full overview of the results for this party, see the Svenska folkpartiet i Finland page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 5 | 0.1% | 100% | |
| 6 | 4% | 99.9% | |
| 7 | 28% | 96% | |
| 8 | 48% | 68% | Median |
| 9 | 10% | 20% | Last Result |
| 10 | 8% | 10% | |
| 11 | 3% | 3% | |
| 12 | 0% | 0% |
Kristillisdemokraatit
For a full overview of the results for this party, see the Kristillisdemokraatit page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 0 | 0.6% | 100% | |
| 1 | 2% | 99.4% | |
| 2 | 11% | 98% | |
| 3 | 18% | 87% | |
| 4 | 8% | 69% | |
| 5 | 19% | 61% | Last Result, Median |
| 6 | 41% | 41% | |
| 7 | 0% | 0% |
Sininen tulevaisuus
For a full overview of the results for this party, see the Sininen tulevaisuus page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 0 | 99.8% | 100% | Last Result, Median |
| 1 | 0.2% | 0.2% | |
| 2 | 0% | 0% |
Coalitions

Confidence Intervals
| Coalition | Last Result | Median | Majority? | 80% Confidence Interval | 90% Confidence Interval | 95% Confidence Interval | 99% Confidence Interval |
|---|---|---|---|---|---|---|---|
| Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Vihreä liitto – Vasemmistoliitto – Svenska folkpartiet i Finland – Kristillisdemokraatit | 112 | 150 | 100% | 146–151 | 145–152 | 144–152 | 142–154 |
| Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Vihreä liitto – Svenska folkpartiet i Finland – Kristillisdemokraatit | 100 | 133 | 100% | 129–135 | 128–135 | 127–136 | 126–138 |
| Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Svenska folkpartiet i Finland – Kristillisdemokraatit | 85 | 106 | 93% | 101–108 | 100–109 | 99–109 | 98–111 |
| Kansallinen Kokoomus – Suomen Keskusta – Perussuomalaiset | 124 | 95 | 1.1% | 91–98 | 90–99 | 89–100 | 87–102 |
| Kansallinen Kokoomus – Suomen Keskusta – Sininen tulevaisuus | 86 | 81 | 0% | 77–84 | 76–85 | 76–85 | 73–87 |
Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Vihreä liitto – Vasemmistoliitto – Svenska folkpartiet i Finland – Kristillisdemokraatit

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 112 | 0% | 100% | Last Result |
| 113 | 0% | 100% | |
| 114 | 0% | 100% | |
| 115 | 0% | 100% | |
| 116 | 0% | 100% | |
| 117 | 0% | 100% | |
| 118 | 0% | 100% | |
| 119 | 0% | 100% | |
| 120 | 0% | 100% | |
| 121 | 0% | 100% | |
| 122 | 0% | 100% | |
| 123 | 0% | 100% | |
| 124 | 0% | 100% | |
| 125 | 0% | 100% | |
| 126 | 0% | 100% | |
| 127 | 0% | 100% | |
| 128 | 0% | 100% | |
| 129 | 0% | 100% | |
| 130 | 0% | 100% | |
| 131 | 0% | 100% | |
| 132 | 0% | 100% | |
| 133 | 0% | 100% | |
| 134 | 0% | 100% | |
| 135 | 0% | 100% | |
| 136 | 0% | 100% | |
| 137 | 0% | 100% | |
| 138 | 0% | 100% | |
| 139 | 0% | 100% | |
| 140 | 0% | 100% | |
| 141 | 0.2% | 100% | |
| 142 | 0.3% | 99.8% | |
| 143 | 0.9% | 99.5% | |
| 144 | 2% | 98.6% | |
| 145 | 5% | 97% | |
| 146 | 8% | 92% | |
| 147 | 6% | 84% | |
| 148 | 9% | 78% | |
| 149 | 12% | 69% | |
| 150 | 19% | 57% | Median |
| 151 | 29% | 38% | |
| 152 | 7% | 9% | |
| 153 | 2% | 2% | |
| 154 | 0.4% | 0.5% | |
| 155 | 0.1% | 0.1% | |
| 156 | 0.1% | 0.1% | |
| 157 | 0% | 0% |
Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Vihreä liitto – Svenska folkpartiet i Finland – Kristillisdemokraatit

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 100 | 0% | 100% | Last Result |
| 101 | 0% | 100% | Majority |
| 102 | 0% | 100% | |
| 103 | 0% | 100% | |
| 104 | 0% | 100% | |
| 105 | 0% | 100% | |
| 106 | 0% | 100% | |
| 107 | 0% | 100% | |
| 108 | 0% | 100% | |
| 109 | 0% | 100% | |
| 110 | 0% | 100% | |
| 111 | 0% | 100% | |
| 112 | 0% | 100% | |
| 113 | 0% | 100% | |
| 114 | 0% | 100% | |
| 115 | 0% | 100% | |
| 116 | 0% | 100% | |
| 117 | 0% | 100% | |
| 118 | 0% | 100% | |
| 119 | 0% | 100% | |
| 120 | 0% | 100% | |
| 121 | 0% | 100% | |
| 122 | 0% | 100% | |
| 123 | 0% | 100% | |
| 124 | 0.1% | 100% | |
| 125 | 0.3% | 99.8% | |
| 126 | 1.1% | 99.5% | |
| 127 | 2% | 98% | |
| 128 | 2% | 97% | |
| 129 | 8% | 94% | |
| 130 | 8% | 86% | |
| 131 | 12% | 78% | |
| 132 | 12% | 66% | |
| 133 | 19% | 54% | Median |
| 134 | 21% | 35% | |
| 135 | 11% | 14% | |
| 136 | 1.4% | 3% | |
| 137 | 1.0% | 2% | |
| 138 | 0.4% | 0.6% | |
| 139 | 0.2% | 0.2% | |
| 140 | 0% | 0% |
Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Svenska folkpartiet i Finland – Kristillisdemokraatit

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 85 | 0% | 100% | Last Result |
| 86 | 0% | 100% | |
| 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 | 0.1% | 100% | |
| 97 | 0.1% | 99.9% | |
| 98 | 0.7% | 99.8% | |
| 99 | 2% | 99.1% | |
| 100 | 3% | 97% | |
| 101 | 9% | 93% | Majority |
| 102 | 5% | 84% | |
| 103 | 11% | 80% | |
| 104 | 9% | 69% | |
| 105 | 8% | 60% | Median |
| 106 | 21% | 52% | |
| 107 | 14% | 30% | |
| 108 | 8% | 17% | |
| 109 | 7% | 9% | |
| 110 | 1.2% | 2% | |
| 111 | 0.5% | 0.8% | |
| 112 | 0.3% | 0.3% | |
| 113 | 0% | 0% |
Kansallinen Kokoomus – Suomen Keskusta – Perussuomalaiset

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 85 | 0.1% | 100% | |
| 86 | 0.2% | 99.9% | |
| 87 | 0.3% | 99.8% | |
| 88 | 0.9% | 99.4% | |
| 89 | 2% | 98.5% | |
| 90 | 2% | 97% | |
| 91 | 7% | 95% | |
| 92 | 7% | 87% | |
| 93 | 18% | 81% | |
| 94 | 8% | 63% | Median |
| 95 | 12% | 55% | |
| 96 | 20% | 43% | |
| 97 | 8% | 23% | |
| 98 | 8% | 15% | |
| 99 | 4% | 7% | |
| 100 | 3% | 4% | |
| 101 | 0.5% | 1.1% | Majority |
| 102 | 0.4% | 0.6% | |
| 103 | 0.2% | 0.2% | |
| 104 | 0% | 0% | |
| 105 | 0% | 0% | |
| 106 | 0% | 0% | |
| 107 | 0% | 0% | |
| 108 | 0% | 0% | |
| 109 | 0% | 0% | |
| 110 | 0% | 0% | |
| 111 | 0% | 0% | |
| 112 | 0% | 0% | |
| 113 | 0% | 0% | |
| 114 | 0% | 0% | |
| 115 | 0% | 0% | |
| 116 | 0% | 0% | |
| 117 | 0% | 0% | |
| 118 | 0% | 0% | |
| 119 | 0% | 0% | |
| 120 | 0% | 0% | |
| 121 | 0% | 0% | |
| 122 | 0% | 0% | |
| 123 | 0% | 0% | |
| 124 | 0% | 0% | Last Result |
Kansallinen Kokoomus – Suomen Keskusta – Sininen tulevaisuus

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 72 | 0.3% | 100% | |
| 73 | 0.6% | 99.7% | |
| 74 | 0.5% | 99.1% | |
| 75 | 1.0% | 98.6% | |
| 76 | 7% | 98% | |
| 77 | 10% | 90% | |
| 78 | 8% | 81% | |
| 79 | 13% | 73% | |
| 80 | 8% | 60% | Median |
| 81 | 8% | 51% | |
| 82 | 18% | 44% | |
| 83 | 12% | 26% | |
| 84 | 9% | 14% | |
| 85 | 3% | 5% | |
| 86 | 2% | 2% | Last Result |
| 87 | 0.6% | 0.9% | |
| 88 | 0.2% | 0.3% | |
| 89 | 0% | 0.1% | |
| 90 | 0% | 0% |
Technical Information
Opinion Poll
- Polling firm: Kantar TNS
- Commissioner(s): Helsingin Sanomat
- Fieldwork period: 19 March–12 April 2018
Calculations
- Sample size: 2428
- Simulations done: 1,048,576
- Error estimate: 1.52%