Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Elections for the Senate of the Philippines were held on November 11, 1947, with eight of the 24 seats in the Senate being contested. These eight seats were elected regularly; the winners were eligible to serve six-year terms from December 30, 1947, until December 30, 1953. Gubernatorial and local elections were held on the same date.
Electoral system
Philippine Senate elections are held via plurality block voting with staggered elections, with the country as an at-large district. The Senate has 24 seats, of which 8 seats are up every 2 years. The eight seats up were last contested in 1941, or the eight seats not contested in 1946; each voter has eight votes and can vote up to eight names, of which the eight candidates with the most votes winning the election.
Summary
Going into the 1947 election, the Senate consisted of nine Liberals, 14 Nacionalista, and one Popular Front (Vicente Y. Sotto). Of the seats up for election in 1947, all eight seats were held by Nacionalistas.
Senate President Jose Avelino, president of the Liberal Party, scored the opposition and said, "the Nacionalista Party of today is not the party of Quezon and Osmeña ... (it is) the party of Hukbalahaps and other dissident elements." In response, Nacionalista Party President Eulogio Rodriguez appealed for the voters to give the opposition a stronger mandate to fiscalize the administration, which they accused of being corrupt and incompetent.
In the 1st Congress, the Liberals held 14 seats in the Senate, thereby retaining control of the Senate. The Liberals' total was reduced to 13 seats pursuant to the Senate Electoral Tribunal resolution in which Senator Carlos Tan (Liberal) was unseated and replaced by Eulogio Rodriguez (Nacionalista) in 1949.
Geronima Pecson became the first woman to be elected in the Senate.