Support for Reform dropped from 29.8% to 26.7% among voting-age citizens with a political preference, while ratings for the Centre Party rose from 23.8% in August to 24.6% in September.

The opposition Conservative People's Party of Estonia (EKRE) remained the third most popular party, supported by 20% of respondents, or 1.2% fewer than in August.

The coalition Social Democratic Party (SDE) was the fourth most popular party in September, garnering the support of 12.5% of respondents. One month prior, support for SDE was slightly higher at 12.7%.

Other parties below election threshold

The remaining parties all remained below the 5% election threshold. Nascent political movement Estonia 200, however, which has announced their plan to establish a political party, rose to sixth in popularity.

The coalition Pro Patria Party earned the support of 4.9% of voters with a political preference. In comparison, Estonia 200 had the support of 4.1% of voters.

The opposition Free Party had the support of just 3.4% of voters, while the non-parliamentary Estonian Greens was supported by 3.2% of voters.

The Estonian Independence Party garnered the support of 0.4% and the People's Unity Party 0.3% of respondents. The Biodiversity Party being established by MP Artur Talvik, meanwhile, had the support of 0% of voters.

In order to make it as comparable as possible to the outcome of a parliamentary election, the results of the survey represent respondents who expressed a political preference. The share of respondents who had no preference or were unwilling to disclose it stood at 23% in September, dropping by 6.8% compared to August. The margin of error was ±2.9%.

From 12-20 September, Kantar Emor conducted online interviews with a total of 973 Estonian citizens between the ages of 18-84.