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A senatorial election was held on November 12, 1963 in the Philippines. The 1963 elections were known as a midterm election as the date when the elected officials take office falls halfway through President Diosdado Macapagal's four-year term.

The Liberal Party won control of the chamber after having ten seats out of the 24-member Senate, as the 2-member Grand Alliance (the old Progressive Party) were caucusing with them, plus Alejandro Almendras of the Nacionalistas who personally supported Senate President Ferdinand Marcos.

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 1957; each voter has eight votes and can vote up to eight names, of which the eight candidates with the most votes winning the election.

1. Oscar Ledesma (Nacionalista), appointed as ambassador to the United States in 1964

The Nacionalista Party and the Liberal Party each won four seats.

Nacionalistas Arturo Tolentino and Gil Puyat, and Liberal Ambrosio Padilla all defended their seats.

Five winners are neophyte senators. These are Juan Liwag, Gerardo Roxas and Tecla San Andres Ziga of the Liberal Party, and the Nacionalistas' José W. Diokno and Rodolfo Ganzon.

Incumbent Nacionalista senators Eulogio Balao, Roseller T. Lim and Cipriano Primicias Sr., and Rogelio de la Rosa of the Liberal Party all lost.

Key:

• ‡ Seats up
• + Gained by a party from another party
• √ Held by the incumbent
• * Held by the same party with a new senator
• ^ Vacancy

Party		Votes	%	+/–	Seats
					Up	Before	Won	After	+/−
	Nacionalista Party	22,983,462	50.17	+5.10	6	13	4	11	−2
	Liberal Party	22,794,310	49.76	+11.88	2	8	4	10	+2
	Independent	34,698	0.08	−0.36	0	0	0	0	0
	Progressive Party				0	2	0	2	0
	Nationalist Citizens' Party				0	1	0	1	0
Total		45,812,470	100.00	–	8	24	8	24	0
Total votes		7,712,019	–
Registered voters/turnout		9,691,121	79.58
Source: Dieter Nohlen; Florian Grotz; Christof Hartmann; Graham Hassall; Soliman M. Santos (15 November 2001). Elections in Asia and the Pacific: A Data Handbook: Volume II: South East Asia, East Asia, and the South Pacific. OUP Oxford. ISBN 9780199249596. & Julio Teehankee. "Electoral Politics in the Philippines" (PDF). quezon.ph.

1. Eulogio Balao (Nacionalista) retired from politics
2. Rogelio de la Rosa (Liberal) appointed as ambassador to Cambodia in 1965
3. Roseller T. Lim (Nacionalista) ran in 1967 and lost, ran as delegate to the Constitutional Convention in 1970 and won
4. Cipriano Primicias Sr. (Nacionalista) retired from politics

• Also done on this day:
  • 1963 Philippine local elections
  • 1963 Philippine House of Representatives special elections (Batangas's 1st and Negros Occidental's 1st districts)
  • 1963 Angeles cityhood plebiscite
  • 1963 Pioduran creation plebiscite
• 5th Congress of the Philippines

• Official website of the Commission on Elections