| # | Name | Parties | Matches |
|---|---|---|---|
| ParlGov | 24 | 24 | |
| Manifesto Project | 12 | 12 | |
| ERDDA (2013) | 11 | 11 | |
| Morgan (1976) | 8 | 8 | |
| Mackie / Rose (1991) | 16 | 16 | |
| CHES | 10 | 10 | |
| EJPR PDY | 13 | 13 | |
| Kitschelt (2013) | 7 | 7 | |
| Huber / Inglehart (1995) | 9 | 9 | |
| Ray (1999) | 8 | 8 | |
| PPMD (2006) | 8 | 8 | |
| CLEA | 25 | 25 | |
| World Values Survey | 10 | 10 | |
| PolCon | 12 | 12 | |
| PPDB (2017) | 7 | 7 | |
| CHISOLS | 12 | 12 | |
| DPI | 7 | 7 | |
| Jennings / Wlezien | 7 | 7 | |
| Wikipedia | 23 | 23 | |
| Global Elections DB | 8 | 8 | |
| Laver / Hunt | 8 | 8 | |
| Elections Global | 18 | 18 | |
| IPOD | 10 | 10 | |
| MAPP | 9 | 9 | |
| CSES-IMD | 10 | 10 | |
| CCS | 8 | 8 | |
| PIP | 9 | 9 | |
| The PopuList | 6 | 6 | |
| V-Party | 18 | 18 | |
| POPPA | 9 | 9 | |
| TAP | 3 | 3 | |
| GPD | 3 | 3 | |
| PPMD (all) | 14 | 14 | |
| ESS prtc* | 12 | 12 | |
| ESS prtv* | 12 | 12 | |
| GPS 2019 | 9 | 9 | |
| NPED | 6 | 6 | |
| WhoGov | 8 | 8 | |
| Leaders Global | 7 | 7 | |
| PAGED | 11 | 11 | |
| EU-NED | 12 | 12 | |
| Wikipedia tags | 20 | 20 | |
| Poll of Polls | 9 | 9 | |
| PopulisTree | 1 | 1 |