| # | Years | Size | Links | |
|---|---|---|---|---|
| JaRePa | 2012–2013 | 14.7% | ||
| KoPo | 2003–2017 | 8.7% | ||
| LeSoPaOfJa | 1953–1953 | 11.4% | ||
| LiPa | 1953–1953 | 33.7% | ||
| RiSoPaOfJa | 1953–1953 | 11.2% | ||
| CDP | 2017–2017 | 14.6% | ||
| DPJ | 1996–2014 | 45.7% | ||
| DSP | 1963–1993 | 4.8% | ||
| Hope | 2017–2017 | 6.2% | ||
| JCP | 1953–2017 | 6.8% | ||
| JIP | 2014–2017 | 5.1% | ||
| JNP | 1993–1993 | 7.2% | ||
| JRP | 1993–1993 | 9.6% | ||
| JSP | 1963–2017 | 26.4% | ||
| Komeito | 1967–1993 | 5.2% | ||
| LDP | 1963–2017 | 47.0% | ||
| NFP | 1996–1996 | 19.0% | ||
| NLC | 1976–1976 | 3.8% | ||
| PLP | 2013–2013 | 1.0% | ||
| Sakigake | 1993–1993 | 2.2% | ||
| TPJ | 2012–2012 | 4.2% | ||
| YP | 2012–2013 | 6.3% | ||
| Ka | 1953–1953 | 6.7% |