In the normal procedure, what majority does a constitutional reform need in each Chamber?
Sources: 1 link, read on 21 October 2026.
Spanish Constitution, article 167 (BOE, consolidated text), read on 21 October 2026.
Answer: Three fifths of each Chamber. Article 167.1 says so.
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Constitution · article 167.1
The question in Spanish
En el procedimiento ordinario, ¿qué mayoría necesita una reforma constitucional en cada Cámara?
The options
- ASimple majorityMayoría simple
- BAbsolute majorityMayoría absoluta
- CThree fifthsTres quintosCorrect
What the Constitution says
«1. Los proyectos de reforma constitucional deberán ser aprobados por una mayoría de tres quintos de cada una de las Cámaras. Si no hubiera acuerdo entre ambas, se intentará obtenerlo mediante la creación de una Comisión de composición paritaria de Diputados y Senadores, que presentará un texto que será votado por el Congreso y el Senado.»
Spanish Constitution of 1978, article 167 (paragraph 1, consolidated text at the BOE), read on 21 October 2026. The quotation is in Spanish, as the BOE prints it; the English wording of the answer is ours. Laws carry no copyright (Ley de Propiedad Intelectual, art. 13), so we quote the text as it stands.
Related questions
- A tenth of the members of one Chamber can ask for a referendum on a constitutional reform. Within how many days after its approval?
- Which of these matters can the Constitutional Court decide?
- For how many years are the members of the Constitutional Court appointed?
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