The Galactic Senate serves as the legislative branch in the Galactic Republic; governing from the Senate Building located on Coruscant. Every member world in the Republic is entitled to a seat in the Galactic Senate and the right to vote on legislation.
Its primary duties are to mediate any disputes between star systems, worlds and cultures, to regulate trade between systems, to protect and care for citizens in need and to provide mutual defense in face of threats to the Republic.
Due to the sheer size of the Senate, which represents thousands of worlds, Senators negotiate alliances–occasionally through backroom deals–to strengthen their position on important issues. Large-scale military deployments must be approved by the Senate.
- For information on this subject beyond The Old Republic, see: Galactic Senate on Wookieepedia