| # | Name | Parties | Matches |
|---|---|---|---|
| Mudde (2007) | 5 | 5 | |
| Elections Global | 47 | 47 | |
| POPPA | 12 | 12 | |
| DPI | 19 | 19 | |
| Laver / Hunt | 10 | 10 | |
| Global Elections DB | 28 | 28 | |
| CCS | 11 | 11 | |
| Mackie / Rose (1991) | 45 | 45 | |
| EJPR PDY | 36 | 36 | |
| WhoGov | 37 | 37 | |
| V-Party | 63 | 63 | |
| EPAC | 19 | 19 | |
| PPDB (2017) | 5 | 5 | |
| KUREP (2012) | 11 | 11 | |
| EU-NED | 64 | 64 | |
| euandi (GPS) | 11 | 11 | |
| PAGED | 52 | 52 | |
| ARPD | 1 | 1 | |
| EES 2014 | 8 | 8 | |
| CLEA | 51 | 51 | |
| PopulisTree | 11 | 11 | |
| PolCon | 27 | 27 | |
| Poll of Polls | 47 | 47 | |
| Wikipedia | 116 | 116 | |
| TAP | 12 | 12 | |
| Jennings / Wlezien | 4 | 4 | |
| PIP | 40 | 40 | |
| Huber / Inglehart (1995) | 10 | 10 | |
| NPED | 21 | 21 | |
| ERDDA (2013) | 32 | 32 | |
| IPOD | 38 | 38 | |
| PPMD (2006) | 13 | 13 | |
| ParlGov | 73 | 73 | |
| The PopuList | 13 | 13 | |
| Leaders Global | 17 | 17 | |
| Morgan (1976) | 10 | 10 | |
| CSES-IMD | 14 | 14 | |
| ESS prtv* | 43 | 43 | |
| Manifesto Project | 53 | 53 | |
| MAPP | 26 | 26 | |
| PPMD (all) | 29 | 29 | |
| Ray (1999) | 17 | 17 | |
| Wikipedia tags | 102 | 102 | |
| GPD | 3 | 3 | |
| EP roll call votes | 28 | 28 | |
| GPS 2019 | 6 | 6 | |
| CHISOLS | 41 | 41 | |
| ESS prtc* | 51 | 51 | |
| Thomas (1975) | 5 | 5 | |
| TAESD | 7 | 7 | |
| PPEPE (2021) | 6 | 6 | |
| CHES | 44 | 44 | |
| Kitschelt (2013) | 9 | 9 |