<Tr> <Td> </Td> <Td> Social Democratic Party (SPS / PSS) </Td> <Td> Social democracy </Td> <Td> 9 </Td> <Td> 11 </Td> <Td> + 2 </Td> </Tr> <Tr> <Td> </Td> <Td> Swiss People's Party (SVP / UDC) </Td> <Td> National conservatism </Td> <Td> 7 </Td> <Td> 5 </Td> <Td> - 2 </Td> </Tr> <Tr> <Td> </Td> <Td> Green Party (GPS / PES) </Td> <Td> Green politics </Td> <Td> </Td> <Td> </Td> <Td> ± 0 </Td> </Tr> <Tr> <Td> </Td> <Td> Green Liberal Party (GLP / VL) </Td> <Td> Green liberalism </Td> <Td> </Td> <Td> </Td> <Td> + 1 </Td> </Tr>

What two forms of government does switzerland have