Opinion Poll by Kantar TNS for Helsingin Sanomat, 19 February–15 March 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 |
|---|---|---|---|---|---|---|
| Kansallinen Kokoomus | 18.2% | 21.1% | 20.0–22.2% | 19.8–22.5% | 19.5–22.8% | 19.0–23.3% |
| Suomen Sosialidemokraattinen Puolue | 16.5% | 20.8% | 19.8–21.9% | 19.5–22.2% | 19.2–22.5% | 18.7–23.0% |
| Suomen Keskusta | 21.1% | 15.9% | 15.0–16.9% | 14.7–17.2% | 14.5–17.4% | 14.1–17.9% |
| Vihreä liitto | 8.5% | 14.5% | 13.6–15.5% | 13.4–15.7% | 13.2–16.0% | 12.8–16.4% |
| Perussuomalaiset | 17.6% | 8.5% | 7.8–9.3% | 7.6–9.5% | 7.4–9.7% | 7.1–10.0% |
| Vasemmistoliitto | 7.1% | 8.5% | 7.8–9.3% | 7.6–9.5% | 7.4–9.7% | 7.1–10.0% |
| Svenska folkpartiet i Finland | 4.9% | 4.1% | 3.6–4.7% | 3.5–4.8% | 3.4–5.0% | 3.2–5.3% |
| Kristillisdemokraatit | 3.5% | 3.2% | 2.8–3.7% | 2.7–3.9% | 2.6–4.0% | 2.4–4.2% |
| Sininen tulevaisuus | 0.0% | 1.4% | 1.1–1.8% | 1.1–1.9% | 1.0–2.0% | 0.9–2.1% |
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 |
|---|---|---|---|---|---|---|
| Kansallinen Kokoomus | 37 | 47 | 42–49 | 42–50 | 41–50 | 40–51 |
| Suomen Sosialidemokraattinen Puolue | 34 | 47 | 44–48 | 43–49 | 42–50 | 40–51 |
| Suomen Keskusta | 49 | 35 | 34–39 | 34–39 | 34–40 | 33–43 |
| Vihreä liitto | 15 | 28 | 26–31 | 25–31 | 25–31 | 24–31 |
| Perussuomalaiset | 38 | 15 | 14–19 | 13–19 | 12–20 | 12–21 |
| Vasemmistoliitto | 12 | 16 | 13–17 | 13–17 | 13–18 | 12–20 |
| Svenska folkpartiet i Finland | 9 | 8 | 7–9 | 7–10 | 6–10 | 6–11 |
| Kristillisdemokraatit | 5 | 3 | 2–6 | 1–6 | 0–6 | 0–6 |
| Sininen tulevaisuus | 0 | 0 | 0 | 0 | 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% | 100% | Last Result |
| 38 | 0.1% | 100% | |
| 39 | 0.3% | 99.9% | |
| 40 | 1.1% | 99.6% | |
| 41 | 3% | 98.5% | |
| 42 | 10% | 95% | |
| 43 | 5% | 85% | |
| 44 | 9% | 81% | |
| 45 | 8% | 72% | |
| 46 | 5% | 63% | |
| 47 | 26% | 58% | Median |
| 48 | 21% | 32% | |
| 49 | 5% | 11% | |
| 50 | 4% | 5% | |
| 51 | 0.8% | 1.1% | |
| 52 | 0.3% | 0.3% | |
| 53 | 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 | 0.1% | 100% | |
| 39 | 0.1% | 99.9% | |
| 40 | 0.3% | 99.8% | |
| 41 | 0.5% | 99.5% | |
| 42 | 2% | 98.9% | |
| 43 | 5% | 97% | |
| 44 | 11% | 92% | |
| 45 | 8% | 81% | |
| 46 | 9% | 73% | |
| 47 | 39% | 64% | Median |
| 48 | 17% | 25% | |
| 49 | 4% | 8% | |
| 50 | 2% | 4% | |
| 51 | 1.1% | 1.4% | |
| 52 | 0.1% | 0.3% | |
| 53 | 0.1% | 0.2% | |
| 54 | 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 |
|---|---|---|---|
| 32 | 0.2% | 100% | |
| 33 | 1.4% | 99.8% | |
| 34 | 35% | 98% | |
| 35 | 26% | 63% | Median |
| 36 | 8% | 37% | |
| 37 | 7% | 29% | |
| 38 | 12% | 22% | |
| 39 | 6% | 10% | |
| 40 | 2% | 4% | |
| 41 | 0.9% | 2% | |
| 42 | 0.6% | 1.1% | |
| 43 | 0.2% | 0.5% | |
| 44 | 0.3% | 0.3% | |
| 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% | 100% | |
| 23 | 0.1% | 99.9% | |
| 24 | 0.7% | 99.8% | |
| 25 | 7% | 99.2% | |
| 26 | 9% | 92% | |
| 27 | 13% | 83% | |
| 28 | 27% | 70% | Median |
| 29 | 8% | 43% | |
| 30 | 15% | 36% | |
| 31 | 20% | 20% | |
| 32 | 0.3% | 0.4% | |
| 33 | 0.1% | 0.1% | |
| 34 | 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 | 0.1% | 100% | |
| 11 | 0.1% | 99.9% | |
| 12 | 3% | 99.8% | |
| 13 | 6% | 97% | |
| 14 | 41% | 91% | |
| 15 | 11% | 50% | Median |
| 16 | 12% | 39% | |
| 17 | 5% | 27% | |
| 18 | 8% | 22% | |
| 19 | 10% | 14% | |
| 20 | 3% | 4% | |
| 21 | 1.1% | 1.3% | |
| 22 | 0.2% | 0.2% | |
| 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 |
Vasemmistoliitto
For a full overview of the results for this party, see the Vasemmistoliitto page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 11 | 0.1% | 100% | |
| 12 | 2% | 99.9% | Last Result |
| 13 | 14% | 98% | |
| 14 | 7% | 84% | |
| 15 | 4% | 77% | |
| 16 | 29% | 73% | Median |
| 17 | 39% | 44% | |
| 18 | 2% | 4% | |
| 19 | 1.2% | 2% | |
| 20 | 0.5% | 0.7% | |
| 21 | 0.1% | 0.1% | |
| 22 | 0% | 0% |
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 |
|---|---|---|---|
| 4 | 0.1% | 100% | |
| 5 | 0.2% | 99.9% | |
| 6 | 4% | 99.8% | |
| 7 | 37% | 96% | |
| 8 | 48% | 59% | Median |
| 9 | 6% | 11% | Last Result |
| 10 | 4% | 5% | |
| 11 | 0.6% | 0.6% | |
| 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 | 3% | 100% | |
| 1 | 6% | 97% | |
| 2 | 28% | 90% | |
| 3 | 13% | 62% | Median |
| 4 | 19% | 49% | |
| 5 | 17% | 30% | Last Result |
| 6 | 13% | 13% | |
| 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 | 100% | 100% | Last Result, Median |
Coalitions

Confidence Intervals
| Coalition | Last Result | Median | Majority? | 80% Confidence Interval | 90% Confidence Interval | 95% Confidence Interval | 99% Confidence Interval |
|---|---|---|---|---|---|---|---|
| Kansallinen Kokoomus – Suomen Sosialidemokraattinen Puolue – Vihreä liitto – Vasemmistoliitto – Svenska folkpartiet i Finland – Kristillisdemokraatit | 112 | 148 | 100% | 145–151 | 144–151 | 143–151 | 141–152 |
| Kansallinen Kokoomus – Suomen Sosialidemokraattinen Puolue – Vihreä liitto – Svenska folkpartiet i Finland – Kristillisdemokraatit | 100 | 133 | 100% | 128–135 | 128–137 | 127–137 | 125–137 |
| Kansallinen Kokoomus – Suomen Sosialidemokraattinen Puolue – Svenska folkpartiet i Finland – Kristillisdemokraatit | 85 | 104 | 85% | 99–107 | 99–108 | 98–108 | 96–109 |
| Kansallinen Kokoomus – Suomen Keskusta – Perussuomalaiset | 124 | 97 | 16% | 94–101 | 93–102 | 92–103 | 91–104 |
| Kansallinen Kokoomus – Suomen Keskusta – Sininen tulevaisuus | 86 | 82 | 0% | 77–85 | 77–86 | 76–87 | 75–89 |
Kansallinen Kokoomus – Suomen Sosialidemokraattinen Puolue – 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 | 0.1% | 100% | |
| 140 | 0.3% | 99.9% | |
| 141 | 0.6% | 99.6% | |
| 142 | 0.4% | 99.0% | |
| 143 | 1.5% | 98.6% | |
| 144 | 4% | 97% | |
| 145 | 17% | 93% | |
| 146 | 11% | 77% | |
| 147 | 13% | 65% | |
| 148 | 7% | 52% | |
| 149 | 10% | 45% | Median |
| 150 | 13% | 35% | |
| 151 | 20% | 21% | |
| 152 | 1.1% | 1.4% | |
| 153 | 0.2% | 0.3% | |
| 154 | 0.1% | 0.1% | |
| 155 | 0% | 0% |
Kansallinen Kokoomus – Suomen Sosialidemokraattinen Puolue – 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 | 0.2% | 100% | |
| 125 | 0.5% | 99.8% | |
| 126 | 0.5% | 99.2% | |
| 127 | 2% | 98.8% | |
| 128 | 9% | 97% | |
| 129 | 14% | 88% | |
| 130 | 8% | 74% | |
| 131 | 9% | 67% | |
| 132 | 5% | 58% | |
| 133 | 13% | 53% | Median |
| 134 | 25% | 40% | |
| 135 | 8% | 15% | |
| 136 | 2% | 7% | |
| 137 | 5% | 5% | |
| 138 | 0.1% | 0.2% | |
| 139 | 0.1% | 0.1% | |
| 140 | 0% | 0% |
Kansallinen Kokoomus – Suomen Sosialidemokraattinen Puolue – 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 | 0.1% | 100% | |
| 96 | 0.5% | 99.8% | |
| 97 | 0.8% | 99.3% | |
| 98 | 2% | 98.5% | |
| 99 | 8% | 97% | |
| 100 | 4% | 89% | |
| 101 | 13% | 85% | Majority |
| 102 | 10% | 72% | |
| 103 | 8% | 62% | |
| 104 | 11% | 53% | |
| 105 | 8% | 43% | Median |
| 106 | 21% | 35% | |
| 107 | 7% | 14% | |
| 108 | 6% | 8% | |
| 109 | 2% | 2% | |
| 110 | 0.3% | 0.4% | |
| 111 | 0.1% | 0.1% | |
| 112 | 0% | 0% |
Kansallinen Kokoomus – Suomen Keskusta – Perussuomalaiset

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 88 | 0.1% | 100% | |
| 89 | 0.1% | 99.9% | |
| 90 | 0.3% | 99.8% | |
| 91 | 1.0% | 99.5% | |
| 92 | 1.4% | 98.6% | |
| 93 | 6% | 97% | |
| 94 | 5% | 91% | |
| 95 | 20% | 86% | |
| 96 | 12% | 66% | |
| 97 | 10% | 54% | Median |
| 98 | 11% | 44% | |
| 99 | 11% | 33% | |
| 100 | 6% | 22% | |
| 101 | 10% | 16% | Majority |
| 102 | 3% | 6% | |
| 103 | 2% | 3% | |
| 104 | 0.8% | 1.2% | |
| 105 | 0.3% | 0.4% | |
| 106 | 0.1% | 0.2% | |
| 107 | 0.1% | 0.1% | |
| 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 |
|---|---|---|---|
| 73 | 0.1% | 100% | |
| 74 | 0.1% | 99.9% | |
| 75 | 0.4% | 99.8% | |
| 76 | 2% | 99.4% | |
| 77 | 7% | 97% | |
| 78 | 3% | 90% | |
| 79 | 8% | 87% | |
| 80 | 7% | 79% | |
| 81 | 17% | 71% | |
| 82 | 18% | 54% | Median |
| 83 | 8% | 36% | |
| 84 | 11% | 28% | |
| 85 | 11% | 17% | |
| 86 | 3% | 6% | Last Result |
| 87 | 2% | 3% | |
| 88 | 0.5% | 2% | |
| 89 | 1.0% | 1.3% | |
| 90 | 0.2% | 0.3% | |
| 91 | 0.1% | 0.1% | |
| 92 | 0% | 0% |
Technical Information
Opinion Poll
- Polling firm: Kantar TNS
- Commissioner(s): Helsingin Sanomat
- Fieldwork period: 19 February–15 March 2018
Calculations
- Sample size: 2438
- Simulations done: 1,048,576
- Error estimate: 1.48%