Once he had returned to Guam, Sablan took a job within the territorial government. He was quickly promoted to administrative positions within government agencies, including the Director of Labor and Personnel by 1961. His work caught the attention of Governor Manuel F.L. Guerrero, who appointed Sablan as both assistant Secretary of Guam and executive assistant to the Governor during the 1960s. The appointments allowed Sablan to oversee much of Guam's executive branch.
Political career
In 1974, Governor Carlos Camacho, a Republican and the first elected Governor of Guam, sought re-election for a second term, together with his Lt. Governor Kurt Moylan. Four Democrats declared their intention to challenge Camacho, including Ricardo Bordallo, former Gov. Manuel Flores Leon Guerrero ; Pedro C. Sanchez, the former President of University of Guam, and Joaquin C. "Kin" Arriola. On the Republican side, a rival team, Senator Paul McDonald Calvo with running mateTony Palomo, challenged Governor Camacho for the GOP nomination. Democratic gubernatorial candidate Ricardo Bordallo chose Rudy Sablan as his running mate for Lt. Governor. The Bordallo-Sablan team won the 1974 Democratic primary election, defeating the three other candidates. Governor Carlos Camacho won the Republican nomination, beating the Calvo-Palomo ticket, but badly dividing Guam's Republican Party. The Republican split worked to the Democrat's advantage, allowing Bordallo to defeat Governor Camacho in the November gubernatorial election. Governor Bordallo and Lt. Governor Rudy Sablan were sworn into office on January 6, 1975. Sablan became the second elected Lt. Governor in Guam's history. However, Bordallo and Sablan frequent, public spats and disagreements on policy issues plagued the Bordallo-Sablan administration throughout their four-year term. The political relationship between the Governor and Lt. Governor broke down by the 1978 general election. In 1978, Rudy Sablan ran against Governor Bordallo in the gubernatorial election. Sablan chose Jose L. "Joe" Leon Guerrero as his running mate for Lt. Governor, while Governor Bordallo replaced Sablan with Dr. Pedro C. Sanchez, a historian and educator, on his ticket. Governor Bordallo defeated Sablan in the 1978 Democratic primary, taking 34.2% while Sablan-Guerrero placed second with 25% of the vote. Ricardo Bordallo ultimately lost his re-election bid to Republican Paul McDonald Calvo in November 1978. Four years later, Sablan once again announced his candidacy for Governor of Guam in the 1982 gubernatorial election. Sablan again picked his Joe Leon Guerrero, as his running mate for Lt. Governor. However, the Sablan-Guerrero lost a rematch in Democratic primary to Ricardo Bordallo and his new running mate, Edward Diego Reyes. Bordallo defeated Sablan by 35 percentage points in the Democratic primary to win the nomination. Bordallo, in a second political rematch from 1978, then beat Governor Paul McDonald Calvo in the November 1982general election..
Later career and life
Governor Ricky Bordallo appointed Sablan as a member of Commission on Self-Determination, which oversaw the future relationship between Guam and the United States, from 1983 until 1987. Sablan remained a proponent the Guam Commonwealth Act, even after the end of the Bordallo-Reyes administration in 1987. In December 1989, Sablan testified in support of the Guam Commonwealth Act at the sole U.S. congressional hearing on the Act, which was held in Honolulu. In 1983, Sablan was appointed Chairman of the board of directors of the Guam Airport Authority, a territorial government agency which operates the island's international airport. Under Sablan, the airport's terminals and runways were modernized and expanded to encourage a growing tourism industry. Sablan worked to reconcile the various, often infighting, factions of the Democratic Party of Guam by 1993. He endorsed the 1994 gubernatorial campaign of Governor Carl Gutierrez and Lt. Gov. Madeleine Bordallo and has been credited with helping the Gutierrez-Bordallo team win the 1994 general election. Sablan became an integral advisor to the new Gutierrez administration. Governor Carl Gutierrez appointed Sablan to the Commission on Self-Determination from 1994 until his death in 1995.. In 1994 and 1995, Gutierrez appointed Sablan as part of a team who represented Guam at the Base Reuse and Realignment Commission hearings in San Francisco, California. Sablan died on July 24, 1995 at the age of 63. He was survived by his wife, Esperanza "Ancha" Cruz San Nicolas; their two children, Rudy and Essie; and three grandchildren, Marie Antoinette, Jessica, and Mario.