Three companies published surveys. They talk about party support.
The Turu-uuringud survey says that the Center Party is in first place. Norstat says that Isamaa is in first place. Emor says that Isamaa is ahead of the Center Party, but only slightly.
The differences may cause confusion. However, the differences may not be significant.
For example, in the Emor survey, Isamaa's support was 23.5%. The Center Party was 20.6% in the Emor survey. A survey expert says that the difference is not large.
Each company uses different methods for the survey. Norstat interviews over 1000 people per week. Emor interviews 1500 people per month. The Turu-uuringud surveyed 903 people.
Each company's surveys are different. This affects the results.