| # | Name | Parties | Matches |
|---|---|---|---|
| ParlGov | 50 | 50 | |
| Manifesto Project | 34 | 34 | |
| ERDDA (2013) | 21 | 21 | |
| CHES | 17 | 17 | |
| EJPR PDY | 27 | 27 | |
| Kitschelt (2013) | 8 | 8 | |
| KUREP (2012) | 8 | 8 | |
| EPAC (2018) | 17 | 17 | |
| PPMD (2006) | 7 | 7 | |
| CLEA | 25 | 25 | |
| World Values Survey | 3 | 3 | |
| EES 2014 | 7 | 7 | |
| PolCon | 29 | 29 | |
| CHISOLS | 24 | 24 | |
| DPI | 27 | 27 | |
| Wikipedia | 55 | 55 | |
| Global Elections DB | 26 | 26 | |
| euandi (GPS) | 8 | 8 | |
| Elections Global | 37 | 37 | |
| CSES-IMD | 8 | 8 | |
| PIP | 27 | 27 | |
| Mudde (2007) | 1 | 1 | |
| The PopuList | 7 | 7 | |
| V-Party | 46 | 46 | |
| TAP | 5 | 5 | |
| GPD | 5 | 5 | |
| PPMD (all) | 7 | 7 | |
| ESS prtc* | 8 | 8 | |
| ESS prtv* | 8 | 8 | |
| GPS 2019 | 9 | 9 | |
| WhoGov | 22 | 22 | |
| Leaders Global | 12 | 12 | |
| EU-NED | 42 | 42 | |
| Wikipedia tags | 33 | 33 | |
| Poll of Polls - Politico Europe | 19 | 19 |