Alderaan Senatorial Delegation The Aldreaan Senatorial Delegation was a group of diplomats chosen to represent the planet of Alderaan and the other worlds of the Alderaan sector , in the Core Worlds region of the galaxy . The delegation consisted of a senator and their aides . One of its historical leaders , Bail Antilles , ran for Supreme Chancellor of the Galactic Republic in 32 BBY , but lost to Palpatine of Naboo . When the latter transformed the Republic into a Galactic Empire and assumed the title of Emperor , the Alderaan Senatorial Delegation remained a part of the revamped Imperial Senate . In 0 BBY , however , the Alderaanian delegation was disbanded along with the rest of the Senate when the Emperor decided to shut down the assembly . During its many centuries of existence , the Alderaan Senatorial Delegation exercised considerable authority in the Senate , and its members long advocated the values of pacifism . Organization . The Alderaan Senatorial Delegation occupied a repulsorpod in the Grand Convocation Chamber of the Senate Tower on Coruscant . It represented the planet of Alderaan and all other worlds located within its sector . With Alderaan being part of the Core Founder s , the founding worlds of the Republic , On Coruscant , a bright ecumenopolis that hosted as the galactic capital , the Alderaanian delegation resided at Cantham House — also known as the Alderaanian consulate . History . During the Great Galactic War bewteen the Republic and the Sith Empire , the Alderaan sector was represented by Prince Gaul Panteer , heir to the Alderaanian crown . Under the guidance of Panteern the leaders of Alderaan became a voice for aggressive military action in the Senate for the first time in history . When the a peace treaty was signed a few years later , Panteer seceded from the Senate in protest . He and his mother Queen Silara Panteer were assassinated in the aftermath . Millennia later , under the reign of Queen Mazicia Organa , the senator Agrippa Aldrete was head of the Alderaanian delegation . At some point before 33 BBY , he was replaced by Prince Bail of the House Antilles , who made him one of his aides along with a young woman named Liana Merian . During Antilles ' tenure , the Alderaanian delegation was part of the Core faction , one of the two major factions of representatives in the Senate . In 32 BBY , Antilles retired from politics after losing the Chancery election against Palpatine , leader of the Naboo Senatorial Delegation . Antilles was succeeded by his namesake , Prince Bail Prestor Organa , whose assistants included Sheltay Retrac and Sateen Vestswe . Organa remained in place as a Galactic Republic senator for thirteen years , and he was renewed following the transformation of the Republic into a Galactic Empire , with the Galactic Senate becoming the Imperial Senate . Around 2 BBY , the politicians of Alderaanian were amongst the secret founders of the Rebel Alliance , an organized group of resistance fighters opposed to the tyranny of the Imperial government . In 1 BBY , Bail Organa passed the torch to his adopted daughter , the seventeen - year old Princess Leia Organa . The Princess , however , did not remain in office for long , since the Senate was officially disbanded by order of Galactic Emperor Palpatine in 0 BBY . Moreover , Princess Leia had been arrested shortly earlier by Darth Vader , the Emperor ' s second - in - command , while she was secretly on a rebel mission above Tatooine . A falsified report had been sent , proclaiming that the senator had perished with her starship after encountering a meteorite field it could not avoid .