<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 . (March 2017) (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 . (March 2017) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Speaker of the United States House of Representatives </Th> </Tr> <Tr> <Td_colspan="2"> Seal of the Speaker of the House </Td> </Tr> <Tr> <Td_colspan="2"> Flag of the Speaker of the House </Td> </Tr> <Tr> <Td_colspan="2"> Incumbent Paul Ryan since October 29, 2015 </Td> </Tr> <Tr> <Td_colspan="2"> U.S. Congress U.S. House of Representatives </Td> </Tr> <Tr> <Th> Style </Th> <Td> Mr. or Madame Speaker (Informal and within the House) The Honorable (Formal) </Td> </Tr> <Tr> <Th> Type </Th> <Td> Presiding officer of one chamber in a bicameral legislature </Td> </Tr> <Tr> <Th> Residence </Th> <Td> Washington, D.C. </Td> </Tr> <Tr> <Th> Seat </Th> <Td> United States Capitol, District of Columbia, U.S. </Td> </Tr> <Tr> <Th> Nominator </Th> <Td> Anyone who is qualified to be a representative; in practice member of the house and party leadership . Nominations are submitted to the Clerk, but anyone eligible can be voted for as the Speaker, even without being formally nominated . </Td> </Tr> <Tr> <Th> Appointer </Th> <Td> U.S. House of Representatives Elected by the House, sworn in by the Dean </Td> </Tr> <Tr> <Th> Term length </Th> <Td> At the House's pleasure; elected at the start of each session of Congress, and upon a vacancy </Td> </Tr> <Tr> <Th> Constituting instrument </Th> <Td> U.S. Constitution </Td> </Tr> <Tr> <Th> Formation </Th> <Td> March 4, 1789; 228 years ago (1789 - 03 - 04) </Td> </Tr> <Tr> <Th> First holder </Th> <Td> Frederick Muhlenberg April 1, 1789 </Td> </Tr> <Tr> <Th> Succession </Th> <Td> Second </Td> </Tr> <Tr> <Th> Deputy </Th> <Td> The Speaker can delegate to a member of the House to act as Speaker pro tempore, presiding over the House in his absence </Td> </Tr> <Tr> <Th> Salary </Th> <Td> $223,500 / year </Td> </Tr> <Tr> <Th> Website </Th> <Td> Speaker.gov </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Speaker of the United States House of Representatives </Th> </Tr>

Who presides over the house and how is that person chosen
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