<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (October 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (October 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> The Government of Guam (GovGuam) is a presidential representative democratic system, whereby the President is the head of state and the Governor is head of government, and of a multi-party system . Guam is an organized, unincorporated territory of the United States with policy relations between Guam and the US under the jurisdiction of the Office of Insular Affairs . </P> <Table> Main office holders <Tr> <Th> Office </Th> <Th> Name </Th> <Th> Party </Th> <Th> Since </Th> </Tr> <Tr> <Td> Governor </Td> <Td> Eddie Calvo </Td> <Td> Republican </Td> <Td> January 2011 </Td> </Tr> <Tr> <Td> Lieutenant Governor </Td> <Td> Ray Tenorio </Td> <Td> Republican </Td> <Td> January 2011 </Td> </Tr> </Table>

What is the type of government in guam