The Congress of Deputies (Spanish: Congreso de los Diputados) is the lower house of the Cortes Generales, Spain's legislative branch, the upper house being the Senate. The Congress meets in the Palace of the Parliament (Palacio de las Cortes) in Madrid.
Congress has 350 members elected from fifty-two constituencies (the fifty provinces and two autonomous cities) using closed list D'Hondt proportional representation. Deputies serve four-year terms. The presiding officer and speaker is the President of the Congress of Deputies, who is elected by the members at the first sitting of Congress after an election.