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Pollster and election

INSA on the Brandenburg state election

19 polls since 17 August 2018, the latest from 20 March 2026 for Märkische Allgemeine Zeitung (MAZ) / Märkische Oderzeitung (MOZ) / Lausitzer Rundschau (LR). Against the current average of all pollsters, INSA has Linke -2.5 and BSW +2.0. House effect since 24 Jun 2024: SPD +1.2, AfD -0.6, Grüne -0.5.

  • AfD34.0%±0
  • SPD24.0%-1.0
  • CDU14.0%+1.0
  • BSW8.0%±0
  • Linke7.0%-1.0
  • Grüne5.0%±0
  • Others8.0%+1.0

Dashed line: electoral threshold of 5%. Change compared with the INSA poll of 15 Jan 2026.

This poll in detail

Trend

All INSA figures for the Brandenburg state election

0102030402023202420252026AfDSPDCDUBSWLinkeGrüne
Dots are individual polls, lines the rolling average over 120 days. Period 11 Oct 2022 to 20 Mar 2026. Tap the tiles to hide parties.
Accuracy

INSA before the last elections

Deviation of the final poll before the election from the official result, mean absolute deviation per party.

  • Election 22 Sep 2024 (poll 17 Sep 2024)1.8 ptsbiggest miss SPD -5.9
  • Election 1 Sep 2019 (poll 27 Aug 2019)2.5 ptsbiggest miss SPD -5.2
Archive

All 19 polls

INSA polls for the Brandenburg state election
PollsterPublishedAfDSPDCDUBSWLinkeGrüneOthers
INSA20 Mar 20263424148758
INSA15 Jan 20263425138857
INSA18 Sep 20253424139943
INSA28 Jan 202529251713534
INSA17 Sep 202428251614344
INSA6 Aug 202424201917554
INSA16 Jul 202424191817573
INSA24 May 202425191913673
INSA3 Apr 202425191912783
INSA17 Jan 202428171813682
INSA4 Jul 2023282118–1096
INSA5 Apr 2023252119–10106
INSA11 Oct 2022252217–10116
INSA8 Oct 2020202117–13164
INSA27 Aug 2019212117–15142
INSA2 Jul 2019191918–16163
INSA30 May 2019201920–18123
INSA7 Feb 2019192121–17103
INSA17 Aug 2018212318–1883

Other elections covered by this pollster

Election tickerNext electionSaarland207 daysLatest pollForsa, North Rhine-Westphalia23 Sep 2026CDU 29AfD 22Grüne 18Biggest moveSPD, Rhineland-Palatinate▼ −8,3Leading nationallyAfDfor 159 daysRun-offsLower Saxony local elections4 daysLatest resultBerlin state election 2026Linke 25.7%, preliminary

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