Liberal Party contested the election: Jose Avelino with Vicente Francisco and Elpidio Quirino with Fernando Lopez. Avelino and Francisco did not win at least a plurality of votes in a single province except Avelino's home province of Samar. In 1946, two candidates from the Nacionalista Party contested the election: Sergio Osmeña and Manuel Roxas. Both candidates won a plurality votes in more than one province. Prior to 1969, Agusan del Norte and Agusan del Sur were part of the province of Agusan. Agusan was split into two provinces on 1967. In 1966, the Mountain Province is divided into Kalinga-Apayao, Benguet, Ifugao and a smaller Mountain Province. Kalinga-Apayao was separated in 1995 as Kalinga and Apayao. Named after the wife of Philippine President Manuel Luis Quezon, Maria Aurora Aragon-Quezon, the province was separated from the province of Quezon on August 13, 1979. Prior to that, it became a sub-province of Quezon after Aurora's death in 1951. On April 8, 1959, Republic Act No. 2141 was signed into law effectively making Biliran a sub-province of Leyte. The island was only made an independent province on May 11, 1992 by virtue of Republic Act No. 7160. Prior to 1969, Camiguin is a sub-province under the jurisdiction of Misamis Oriental. It became an independent province on June 18, 1966. The eastern part of Davao del Norte on January 30, 1998 as the province of Compostela Valley by virtue of Republic Act No. 8470. The present-day Davao Region used to be a whole province simply known as Davao. This original province was split into three: Davao del Norte, Davao Oriental, and Davao del Sur when Republic Act No. 4867. The province of Dinagat Islands had been a part of the First District of Surigao del Norte until becoming a province on its own on December 2, 2006. On February 11, 2010, the Supreme Court of the Philippines declared the creation of Dinagat Islands null and void on grounds of failure to meet land area and population requirements for the creation of local government units. Dinagat Islands then reverted to Surigao del Norte. On March 30, 2011, however, the Supreme Court reversed its ruling from the previous year, and upheld the constitutionality of RA 9355 and the creation of Dinagat Islands as a province. On June 19, 1965 the Philippine Congress approved Republic Act No. 4221 dividing the province of Samar into three provinces: Northern Samar,