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According to the PolitPro poll trend (as of September 6, 2026), Centerpartiet (C) stands at 7.5% (+0.8 points vs. prior month, projected 27 seats). The 5.5% threshold is 2.0 points below the current poll average – even a polling error of ±2.5pp (as observed in Swedish averages) would leave C above 5.5%. The 4% threshold is already expected to be cleared with 80% probability per existing forecast; >5.5% is calibrated more conservatively. Polymarket 'Sweden Parliamentary Election Winner': $4.57M trading volume, no C-specific market found.
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Current polls place Liberalerna well below the 4% threshold: Infostat (fieldwork through September 1) and PolitPro trend (September 6) show L at only 2.0–2.5%. That is far below their 2022 result (4.7%) and makes a jump to 4% within the remaining days unlikely. Existing open forecasts project 7 parties above the threshold; Liberalerna is not among them. Main risk: last-minute tactical voting surge, which historically shifts outcomes by at most 0.5–1.0 percentage points in Swedish elections.
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Per PolitPro election trend (September 6, 2026), Sweden Democrats poll steadily at 19.5%. All recent individual polls show SD consistently above 19%: Infostat (through Sep 1, 2026): 20.2%; Demoskop (Aug 25–Sep 1, 2026): 20.0%; Novus (Aug 24–30, 2026): 20.7%. No explicit Polymarket market for this SD % threshold; implied market probability based on poll aggregate ~80%. The 19.0% threshold sits below all current polling figures; SD would need to underperform all polls by more than 0.5pp to miss. SD has been consistently the second-largest party since 2022.
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Novus Väljarbarometer September 2026: Miljöpartiet at 7.8% (−0.1 pp vs. August). PolitPro election trend: 7.3%. SCB May 2026 survey: 6.6% ± 0.7%. All institutes sit well clear of the 4% threshold — even the lower confidence interval (~5.9%) comfortably exceeds the barrier. The party benefits from heightened climate-voter interest in 2026; no regular survey places MP anywhere near the 4% floor. No Polymarket contract found specifically for MP; estimated probability ~88%.
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The polling aggregate (politpro.eu, early September 2026) shows Vänsterpartiet steady at 8.1%, confirmed by individual polls (Verian: ~8.4%, Demoskop: similar). The 7.0% bar sits 1.1 points below current polling — a typical safety cushion for Swedish mid-size parties. No prediction market for exact V result; own calibration based on aggregate.
🏛️ Politics
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Polls show KD at 6.6% aggregate (politpro.eu, early September 2026). The 5.5% bar sits 1.1 points below polling. Swedish smaller parties with stable core voters above 6% can still slip on election day due to tactical voting, but falling below 5.5% from 6.6% polling is a minority scenario.
🏛️ Politics
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The PolitPro election trend (September 6, 2026) shows S at 28.7%; Infostat (September 1, 2026) at 27.2%; Demoskop (August 24, 2026) at 30.4%. The weighted average is just above 28%. Socialdemokraterna clearly leads all parties. The party traditionally over-performs polls on election day due to superior voter mobilization. No explicit Polymarket market found for this question. Uncertainty arises from the tight polling spread (±1.5 pp); falling below 28% is possible with weaker mobilization.
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Sweden's Moderaterna (M) poll at 17.5% in current aggregates (August/September 2026), down from 19.1% in the 2022 election. Falling below 16.0% would require a 1.5 pp downswing from the current poll mean — more than one standard deviation in Swedish polling history. No Polymarket market available; based on polling aggregation and historical polling error, we estimate ~72%.
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The latest PolitPro election trend (6 Sep 2026) shows S at 28.7% in first place — ~9 percentage points ahead of Sverigedemokraterna (19.5%) and 11pp ahead of Moderaterna (17.5%). Seat projection gives S 105 of 349 seats. A second-place party closing a 9pp gap in 5 days would be historically unprecedented. No Polymarket market for the 'largest party' outcome specifically. Distinct from the open prediction 'S > 28.0%': this asks about seat rank, not vote share.
🏛️ Politics
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Current polls (PolitPro, 7 September 2026) show Centerpartiet at 7.6% – a buffer of 2.6 percentage points above the 5.0% threshold. Historically, the deviation between the last Swedish pre-election poll and the final result is under 2 percentage points (elections 2010–2022). Centerpartiet is the liberal rural centre party with a stable voter base. No direct prediction market for this specific threshold; statistical probability based on the polling margin and historical deviation: approximately 91%.
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The Sweden Democrats (SD) achieved their best-ever 20.5% at the 2022 Riksdag election, making them the second-largest party. Current Swedish polls (Demoskop, Sifo, as of Aug/Sep 2026) show SD polling in the 18–23% range. Migration and domestic security dominate the campaign — SD's core issues. A result below 18% would be historically exceptional and would require a significant shift in voter sentiment. Existing Cassandra predictions cover S, M, V, C, KD, MP; SD's percentage has not yet been predicted.
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Infostat poll of September 1, 2026: Liberalerna at 2.5%. PolitPro Election Trend (as of September 3): 2.4%. Sweden's threshold is 4.0%. To clear it, the party would need to nearly double its share by election day – historically extremely rare (<5% of comparable cases). Since the departure of Johan Pehrson, Liberalerna has found no coherent profile strategy and is losing voters to both Socialdemokraterna and Moderaterna. No forecasting platform rates Riksdag entry as probable. This prediction fills the gap in the platform's Swedish party forecasts.
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Current polls show Liberalerna well below the 4% threshold: Indikator Opinion (fieldwork to September 4, 2026): 2.2%; PolitPro election trend (as of September 9, 2026): 2.7%. Neither institute identifies meaningful upward momentum. The party was part of the Tidö coalition but suffered from its image problems. Even with maximum systematic polling error of +1.5 points, Liberalerna would remain below 4.2%. Failing to enter the Riksdag would cost the governing coalition its parliamentary majority.
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According to the latest Indikator Opinion poll (fieldwork to September 4, 2026), Centerpartiet stands at 7.3%. Novus (September 7, 2026) also places C above 6%. The party is part of the Tidö governing coalition and is benefiting from liberal-democratic voters leaving Liberalerna (L, currently ~2.2%). None of the last five polls show C below 6.0%. Swedish polls typically deviate by ~1.5–2 percentage points on average — even with maximum downward deviation, C would remain just above the threshold. No Polymarket data for this party; own estimate: ~76%.
🏛️ Politics
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Vänsterpartiet polls at 8.1% per PolitPro Election Trend (as of September 9, 2026) — their strongest result in years. Infostat (September 1, 2026) has V at 8.7%; even the most conservative recent poll (Demoskop: 6.8%) is close to 7%. The party benefits from the left bloc's clear lead (S+V+MP+C: 51–53%) and tactical strength as the base wing of the expected red-green government. Falling below 7% requires an overestimate of ~1.1pp in the weighted average — possible given ±1.5–2% typical polling error, but the minority scenario (~28%).
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Miljöpartiet (Swedish Greens) polls at 7.3% per PolitPro Election Trend (as of September 9, 2026) — a clear recovery from their 5.1% result in the 2022 Riksdag election. The party benefits from climate policy prioritization in the left-oriented campaign and from Liberalerna (L, likely < 4%) losing centrist voters. Typical Swedish polling error of ±1.5–2% means: falling below 6.5% is possible at ~38% probability. No Polymarket/Kalshi market for this specific outcome; PolitPro trend line clearly supports 6.5%+.
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The Social Democrats (S) are currently Sweden's leading party in polls: Novus (September 7, 2026) shows S at 27.0%, Indikator Opinion (September 4) at 27.9%, the PolitPro 30-day aggregate at ~28.7%. No active Polymarket market for the S vote share; calibrated independently. Historically S achieved 30.3% (2022), 28.3% (2018), 31.0% (2014), 30.7% (2010) — above 27.5% in all four most recent Riksdag elections. The threshold sits just below the current poll aggregate, leaving a buffer for typical election-day variance. S leads all parties with a substantial margin over SD (~20%).
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Novus poll (1–5 Sept 2026): SD 19.7%; PolitPro trend (9 Sept 2026): SD 19.5%. Existing platform prediction 'SD >18%' is near-certain at these poll levels. The >20% threshold is the next informative target, requiring a ~+0.3–0.5 point uplift or above-average election-day mobilisation. Historically SD shows a slight polling undercount. No conflict with existing >18% prediction; additive information.
🏛️ Politics
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Current polls show KD between 5.8% (Infostat, 1 Sep) and 8.5% (Demoskop, 24 Aug); PolitPro Trend: 6.6% (4 Sep 2026). The 6.0% threshold is well below the trend average but only 0.2 pp above the lowest single poll. KD received exactly 6.4% in the 2022 Riksdag election. Some downward pressure from SD strength and government-bloc dynamics. No prediction market found. Calibration: 62%.
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Latest polls show Moderaterna (M) between 17.2% and 18.4%: PolitPro Election Trend (Sept 9): 17.6%; Indikator Opinion (Sept 4): 18.4%; Infostat (Sept 1): 17.5%; Demoskop (Aug 24): 17.2%. The 18.0% threshold sits at the upper quartile of this range. M is the third-largest party behind Socialdemokraterna (S, ~27–29%) and Sverigedemokraterna (SD, ~19–20%). Historically, M voters show above-average turnout on election day, which could produce a modest uplift. No Polymarket/Kalshi market for this sub-question. Own estimate: 42%.