<P> The Economist Intelligence Unit has rated Austria as "full democracy" in 2016 . </P> <P> Austria's constitution characterizes the republic as a federation consisting of nine autonomous federal states . Both the federation and all its states have written constitutions defining them as republican entities governed according to the principles of representative democracy . Aside from the fact that the states of Austria lack an independent judiciary on the one hand and that their autonomy is largely notional on the other hand, Austria's government structure resembles that of some much larger federal republics such as Germany . </P> <Table> Main office holders <Tr> <Th> Office </Th> <Th> Name </Th> <Th> Party </Th> <Th> Since </Th> </Tr> <Tr> <Td> President </Td> <Td> Alexander Van der Bellen </Td> <Td> The Greens </Td> <Td> 26 January 2017 </Td> </Tr> <Tr> <Td> Chancellor </Td> <Td> Sebastian Kurz </Td> <Td> People's Party </Td> <Td> 18 December 2017 </Td> </Tr> </Table> <Tr> <Th> Office </Th> <Th> Name </Th> <Th> Party </Th> <Th> Since </Th> </Tr>

Who is the head of government in austria