| # | Name | Parties | Matches |
|---|---|---|---|
| ParlGov | 27 | 27 | |
| Manifesto Project | 20 | 20 | |
| ERDDA (2013) | 12 | 12 | |
| Mackie / Rose (1991) | 18 | 18 | |
| CHES | 10 | 10 | |
| EJPR PDY | 11 | 11 | |
| Kitschelt (2013) | 5 | 5 | |
| KUREP (2012) | 6 | 6 | |
| Huber / Inglehart (1995) | 4 | 4 | |
| Ray (1999) | 13 | 13 | |
| PPMD (2006) | 6 | 6 | |
| CLEA | 11 | 11 | |
| Janda (1980) | 1 | 1 | |
| EES 2014 | 7 | 7 | |
| PolCon | 10 | 10 | |
| PPDB (2017) | 6 | 6 | |
| CHISOLS | 7 | 7 | |
| DPI | 16 | 16 | |
| Jennings / Wlezien | 8 | 8 | |
| Wikipedia | 49 | 49 | |
| Global Elections DB | 14 | 14 | |
| Laver / Hunt | 11 | 11 | |
| euandi (GPS) | 8 | 8 | |
| Elections Global | 24 | 24 | |
| EP roll call votes | 6 | 6 | |
| IPOD | 13 | 13 | |
| MAPP | 19 | 19 | |
| CSES-IMD | 11 | 11 | |
| CCS | 8 | 8 | |
| PIP | 12 | 12 | |
| Mudde (2007) | 2 | 2 | |
| The PopuList | 4 | 4 | |
| V-Party | 23 | 23 | |
| POPPA | 6 | 6 | |
| TAP | 7 | 7 | |
| PPMD (all) | 13 | 13 | |
| ESS prtc* | 23 | 23 | |
| ESS prtv* | 28 | 28 | |
| GPS 2019 | 5 | 5 | |
| NPED | 6 | 6 | |
| WhoGov | 7 | 7 | |
| Leaders Global | 13 | 13 | |
| PPEPE (2021) | 1 | 1 | |
| CCDD 2018 | 5 | 5 | |
| ARPD | 1 | 1 | |
| PAGED | 12 | 12 | |
| EU-NED | 26 | 26 | |
| Wikipedia tags | 37 | 37 | |
| Poll of Polls | 13 | 13 |