Opinion Poll by Tietoykkönen for Iltalehti and Uusi Suomi, 6–26 June 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% | 20.2% | 18.7–21.8% | 18.3–22.2% | 17.9–22.6% | 17.3–23.4% |
| Kansallinen Kokoomus | 18.2% | 19.7% | 18.3–21.3% | 17.9–21.8% | 17.5–22.1% | 16.9–22.9% |
| Suomen Keskusta | 21.1% | 15.9% | 14.6–17.4% | 14.2–17.8% | 13.9–18.1% | 13.3–18.9% |
| Vihreä liitto | 8.5% | 13.9% | 12.7–15.3% | 12.3–15.7% | 12.0–16.0% | 11.4–16.7% |
| Vasemmistoliitto | 7.1% | 9.4% | 8.4–10.6% | 8.1–11.0% | 7.9–11.3% | 7.4–11.9% |
| Perussuomalaiset | 17.6% | 7.8% | 6.8–8.9% | 6.6–9.2% | 6.4–9.5% | 5.9–10.0% |
| Svenska folkpartiet i Finland | 4.9% | 4.6% | 3.9–5.5% | 3.7–5.8% | 3.6–6.0% | 3.2–6.5% |
| Kristillisdemokraatit | 3.5% | 3.9% | 3.3–4.8% | 3.1–5.0% | 2.9–5.2% | 2.7–5.7% |
| Sininen tulevaisuus | 0.0% | 2.6% | 2.1–3.3% | 2.0–3.5% | 1.8–3.7% | 1.6–4.1% |
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 |
|---|---|---|---|---|---|---|
| Suomen Sosialidemokraattinen Puolue | 34 | 45 | 41–48 | 40–49 | 39–51 | 37–54 |
| Kansallinen Kokoomus | 37 | 42 | 38–48 | 37–49 | 37–49 | 36–50 |
| Suomen Keskusta | 49 | 37 | 34–42 | 33–43 | 33–44 | 30–45 |
| Vihreä liitto | 15 | 27 | 23–30 | 22–31 | 22–32 | 21–33 |
| Vasemmistoliitto | 12 | 17 | 15–21 | 14–22 | 14–22 | 12–24 |
| Perussuomalaiset | 38 | 14 | 12–16 | 11–18 | 10–19 | 10–21 |
| Svenska folkpartiet i Finland | 9 | 9 | 7–11 | 7–11 | 6–11 | 6–13 |
| Kristillisdemokraatit | 5 | 6 | 4–6 | 3–6 | 2–6 | 1–8 |
| Sininen tulevaisuus | 0 | 1 | 0–1 | 0–1 | 0–1 | 0–2 |
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 | 0.1% | 100% | |
| 37 | 0.9% | 99.9% | |
| 38 | 0.9% | 99.0% | |
| 39 | 2% | 98% | |
| 40 | 3% | 96% | |
| 41 | 4% | 94% | |
| 42 | 7% | 89% | |
| 43 | 14% | 83% | |
| 44 | 7% | 68% | |
| 45 | 16% | 62% | Median |
| 46 | 12% | 46% | |
| 47 | 17% | 34% | |
| 48 | 10% | 17% | |
| 49 | 2% | 7% | |
| 50 | 1.4% | 4% | |
| 51 | 1.4% | 3% | |
| 52 | 0.7% | 2% | |
| 53 | 0.4% | 0.9% | |
| 54 | 0.4% | 0.5% | |
| 55 | 0.1% | 0.1% | |
| 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 |
|---|---|---|---|
| 34 | 0.1% | 100% | |
| 35 | 0.2% | 99.9% | |
| 36 | 0.6% | 99.7% | |
| 37 | 6% | 99.1% | Last Result |
| 38 | 7% | 93% | |
| 39 | 6% | 86% | |
| 40 | 13% | 80% | |
| 41 | 13% | 67% | |
| 42 | 8% | 54% | Median |
| 43 | 4% | 47% | |
| 44 | 4% | 43% | |
| 45 | 8% | 39% | |
| 46 | 8% | 31% | |
| 47 | 8% | 23% | |
| 48 | 6% | 15% | |
| 49 | 8% | 9% | |
| 50 | 0.9% | 1.3% | |
| 51 | 0.3% | 0.4% | |
| 52 | 0.1% | 0.1% | |
| 53 | 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 |
|---|---|---|---|
| 28 | 0% | 100% | |
| 29 | 0.2% | 99.9% | |
| 30 | 0.5% | 99.7% | |
| 31 | 0.8% | 99.3% | |
| 32 | 0.8% | 98% | |
| 33 | 3% | 98% | |
| 34 | 12% | 94% | |
| 35 | 18% | 83% | |
| 36 | 14% | 65% | |
| 37 | 7% | 51% | Median |
| 38 | 10% | 43% | |
| 39 | 6% | 33% | |
| 40 | 5% | 27% | |
| 41 | 7% | 22% | |
| 42 | 8% | 15% | |
| 43 | 4% | 7% | |
| 44 | 2% | 3% | |
| 45 | 0.9% | 1.1% | |
| 46 | 0.1% | 0.2% | |
| 47 | 0.1% | 0.1% | |
| 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 | 0.1% | 100% | |
| 20 | 0.3% | 99.9% | |
| 21 | 0.6% | 99.6% | |
| 22 | 6% | 99.0% | |
| 23 | 8% | 93% | |
| 24 | 14% | 85% | |
| 25 | 9% | 71% | |
| 26 | 12% | 62% | |
| 27 | 11% | 51% | Median |
| 28 | 13% | 39% | |
| 29 | 9% | 27% | |
| 30 | 7% | 17% | |
| 31 | 7% | 10% | |
| 32 | 2% | 3% | |
| 33 | 1.1% | 1.2% | |
| 34 | 0.1% | 0.2% | |
| 35 | 0.1% | 0.1% | |
| 36 | 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 | 0.8% | 100% | Last Result |
| 13 | 0.7% | 99.2% | |
| 14 | 4% | 98% | |
| 15 | 6% | 95% | |
| 16 | 18% | 88% | |
| 17 | 22% | 71% | Median |
| 18 | 10% | 49% | |
| 19 | 16% | 39% | |
| 20 | 7% | 22% | |
| 21 | 7% | 15% | |
| 22 | 6% | 7% | |
| 23 | 0.5% | 1.2% | |
| 24 | 0.2% | 0.7% | |
| 25 | 0.1% | 0.5% | |
| 26 | 0.3% | 0.4% | |
| 27 | 0.1% | 0.1% | |
| 28 | 0% | 0% |
Perussuomalaiset
For a full overview of the results for this party, see the Perussuomalaiset page.

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 9 | 0.2% | 100% | |
| 10 | 3% | 99.8% | |
| 11 | 3% | 96% | |
| 12 | 16% | 94% | |
| 13 | 11% | 77% | |
| 14 | 37% | 66% | Median |
| 15 | 6% | 29% | |
| 16 | 13% | 23% | |
| 17 | 4% | 9% | |
| 18 | 2% | 6% | |
| 19 | 1.3% | 3% | |
| 20 | 0.9% | 2% | |
| 21 | 0.7% | 1.1% | |
| 22 | 0.5% | 0.5% | |
| 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 |
|---|---|---|---|
| 4 | 0.1% | 100% | |
| 5 | 0.1% | 99.9% | |
| 6 | 3% | 99.8% | |
| 7 | 13% | 97% | |
| 8 | 28% | 84% | |
| 9 | 18% | 56% | Last Result, Median |
| 10 | 22% | 38% | |
| 11 | 13% | 16% | |
| 12 | 1.1% | 2% | |
| 13 | 0.8% | 1.1% | |
| 14 | 0.3% | 0.3% | |
| 15 | 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 | 0.4% | 100% | |
| 1 | 2% | 99.6% | |
| 2 | 3% | 98% | |
| 3 | 3% | 96% | |
| 4 | 5% | 93% | |
| 5 | 10% | 87% | Last Result |
| 6 | 76% | 77% | Median |
| 7 | 0.5% | 1.2% | |
| 8 | 0.3% | 0.7% | |
| 9 | 0.3% | 0.3% | |
| 10 | 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 | 33% | 100% | Last Result |
| 1 | 66% | 67% | Median |
| 2 | 1.4% | 2% | |
| 3 | 0.1% | 0.4% | |
| 4 | 0.1% | 0.3% | |
| 5 | 0.1% | 0.2% | |
| 6 | 0.1% | 0.1% | |
| 7 | 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 | 147 | 100% | 142–151 | 141–152 | 141–154 | 138–156 |
| Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Vihreä liitto – Svenska folkpartiet i Finland – Kristillisdemokraatit | 100 | 129 | 100% | 125–133 | 124–134 | 122–136 | 121–138 |
| Suomen Sosialidemokraattinen Puolue – Kansallinen Kokoomus – Svenska folkpartiet i Finland – Kristillisdemokraatit | 85 | 102 | 63% | 98–107 | 97–109 | 95–110 | 93–111 |
| Kansallinen Kokoomus – Suomen Keskusta – Perussuomalaiset | 124 | 96 | 3% | 87–99 | 86–100 | 85–101 | 83–103 |
| Kansallinen Kokoomus – Suomen Keskusta – Sininen tulevaisuus | 86 | 82 | 0% | 75–86 | 73–87 | 72–88 | 71–90 |
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 | 0.1% | 99.9% | |
| 138 | 0.4% | 99.8% | |
| 139 | 0.8% | 99.4% | |
| 140 | 1.1% | 98.7% | |
| 141 | 3% | 98% | |
| 142 | 5% | 94% | |
| 143 | 11% | 90% | |
| 144 | 7% | 79% | |
| 145 | 10% | 71% | |
| 146 | 8% | 61% | Median |
| 147 | 10% | 53% | |
| 148 | 8% | 44% | |
| 149 | 11% | 35% | |
| 150 | 7% | 24% | |
| 151 | 9% | 17% | |
| 152 | 4% | 8% | |
| 153 | 2% | 5% | |
| 154 | 1.1% | 3% | |
| 155 | 0.7% | 2% | |
| 156 | 0.6% | 0.9% | |
| 157 | 0.2% | 0.3% | |
| 158 | 0% | 0.1% | |
| 159 | 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 | 0.2% | 100% | |
| 120 | 0.2% | 99.7% | |
| 121 | 0.4% | 99.5% | |
| 122 | 2% | 99.2% | |
| 123 | 1.4% | 97% | |
| 124 | 6% | 96% | |
| 125 | 7% | 90% | |
| 126 | 6% | 83% | |
| 127 | 10% | 77% | |
| 128 | 8% | 67% | |
| 129 | 16% | 60% | Median |
| 130 | 14% | 44% | |
| 131 | 10% | 30% | |
| 132 | 7% | 21% | |
| 133 | 5% | 13% | |
| 134 | 3% | 8% | |
| 135 | 2% | 5% | |
| 136 | 1.3% | 3% | |
| 137 | 0.7% | 1.3% | |
| 138 | 0.3% | 0.7% | |
| 139 | 0.3% | 0.4% | |
| 140 | 0% | 0.1% | |
| 141 | 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 | 0.1% | 99.9% | |
| 92 | 0.1% | 99.9% | |
| 93 | 0.5% | 99.7% | |
| 94 | 0.4% | 99.2% | |
| 95 | 1.3% | 98.8% | |
| 96 | 1.2% | 97% | |
| 97 | 5% | 96% | |
| 98 | 8% | 91% | |
| 99 | 8% | 84% | |
| 100 | 12% | 75% | |
| 101 | 8% | 63% | Majority |
| 102 | 11% | 55% | Median |
| 103 | 8% | 44% | |
| 104 | 4% | 36% | |
| 105 | 5% | 32% | |
| 106 | 11% | 27% | |
| 107 | 7% | 16% | |
| 108 | 2% | 9% | |
| 109 | 4% | 7% | |
| 110 | 3% | 3% | |
| 111 | 0.6% | 0.9% | |
| 112 | 0.1% | 0.3% | |
| 113 | 0.1% | 0.2% | |
| 114 | 0% | 0% |
Kansallinen Kokoomus – Suomen Keskusta – Perussuomalaiset

| Number of Seats | Probability | Accumulated | Special Marks |
|---|---|---|---|
| 82 | 0.3% | 100% | |
| 83 | 0.2% | 99.7% | |
| 84 | 1.4% | 99.5% | |
| 85 | 1.5% | 98% | |
| 86 | 5% | 97% | |
| 87 | 3% | 92% | |
| 88 | 6% | 89% | |
| 89 | 3% | 83% | |
| 90 | 4% | 80% | |
| 91 | 3% | 76% | |
| 92 | 3% | 73% | |
| 93 | 5% | 70% | Median |
| 94 | 6% | 65% | |
| 95 | 9% | 60% | |
| 96 | 8% | 51% | |
| 97 | 14% | 43% | |
| 98 | 10% | 28% | |
| 99 | 9% | 18% | |
| 100 | 5% | 9% | |
| 101 | 2% | 3% | Majority |
| 102 | 1.0% | 1.5% | |
| 103 | 0.2% | 0.5% | |
| 104 | 0.2% | 0.3% | |
| 105 | 0.1% | 0.1% | |
| 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 |
|---|---|---|---|
| 69 | 0% | 100% | |
| 70 | 0.2% | 99.9% | |
| 71 | 0.9% | 99.7% | |
| 72 | 2% | 98.8% | |
| 73 | 3% | 97% | |
| 74 | 2% | 93% | |
| 75 | 6% | 91% | |
| 76 | 4% | 85% | |
| 77 | 7% | 82% | |
| 78 | 4% | 75% | |
| 79 | 4% | 71% | |
| 80 | 5% | 67% | Median |
| 81 | 9% | 62% | |
| 82 | 5% | 53% | |
| 83 | 15% | 48% | |
| 84 | 13% | 33% | |
| 85 | 10% | 20% | |
| 86 | 3% | 10% | Last Result |
| 87 | 4% | 7% | |
| 88 | 1.1% | 3% | |
| 89 | 0.8% | 2% | |
| 90 | 0.7% | 1.1% | |
| 91 | 0.3% | 0.4% | |
| 92 | 0.1% | 0.1% | |
| 93 | 0% | 0% |
Technical Information
Opinion Poll
- Polling firm: Tietoykkönen
- Commissioner(s): Iltalehti and Uusi Suomi
- Fieldwork period: 6–26 June 2018
Calculations
- Sample size: 1145
- Simulations done: 1,048,576
- Error estimate: 2.36%