| # | Years | Size | Links | |
|---|---|---|---|---|
| BDP PBD | 2011–2011 | 4.7% | ||
| CVP PDC | 1999–2011 | 17.6% | ||
| EDU UDF | 1999–2011 | 1.1% | ||
| EVP PEP | 1999–2011 | 2.4% | ||
| FDP PLR | 1999–2007 | 21.6% | ||
| FDP PLR | 2011–2011 | 17.8% | ||
| FGA | 1999–2007 | 1.6% | ||
| GLP PVL | 2011–2011 | 5.6% | ||
| GPS PES | 1999–2011 | 10.0% | ||
| Lega | 1999–2011 | 1.3% | ||
| LPS PLS | 1999–2007 | 2.0% | ||
| PdA PST | 1999–2011 | 1.0% | ||
| SP PS | 1999–2011 | 31.4% | ||
| SVP UDC | 1999–2011 | 28.5% |