Description of data collection, samples and weighting
| Time | Response | Sample type | Population | Sample size | Final sample | Mean weight | |
|---|---|---|---|---|---|---|---|
| Green League (GL) | Apr 2016 | Internet | 1 | 6,951 | 6,034 | 1,653 | 0.23 |
| Social Democratic Party (SDP) | Jun 2016 | Internet and mail | 2 | 40,754 | 5,000 | 1,540 | 1.61 |
| Centre Party of Finland (CPF) | Jun 2016 | Internet and mail | 2 | 1,01,618 | 22,097 | 3,967 | 1.56 |
| Left Alliance (LA) | Aug 2016 | Internet and mail | 2 | 10,173 | 6,764 | 2,384 | 0.26 |
| Finns Party (FP) | Sep 2016 | Internet and mail | 2 | 9,520 | 6,022 | 1,932 | 0.30 |
| National Coalition Party (NCP) | Sep 2016 | Internet | 3 | 35,000 | 5,000 | 951 | 2.24 |
| Total | 2,04,016 | 50,917 | 12,427 |
| Time | Response | Sample type | Population | Sample size | Final sample | Mean weight | |
|---|---|---|---|---|---|---|---|
| Green League (GL) | Apr 2016 | Internet | 1 | 6,951 | 6,034 | 1,653 | 0.23 |
| Social Democratic Party (SDP) | Jun 2016 | Internet and mail | 2 | 40,754 | 5,000 | 1,540 | 1.61 |
| Centre Party of Finland (CPF) | Jun 2016 | Internet and mail | 2 | 1,01,618 | 22,097 | 3,967 | 1.56 |
| Left Alliance (LA) | Aug 2016 | Internet and mail | 2 | 10,173 | 6,764 | 2,384 | 0.26 |
| Finns Party (FP) | Sep 2016 | Internet and mail | 2 | 9,520 | 6,022 | 1,932 | 0.30 |
| National Coalition Party (NCP) | Sep 2016 | Internet | 3 | 35,000 | 5,000 | 951 | 2.24 |
| Total | 2,04,016 | 50,917 | 12,427 |
Note(s): Sample types
1 = Total sample from email register
2 = Simple random sample from postal and email register
3 = Total sample from email register
Source(s): Table created by authors