Sind Province (1936–1955) in the context of "1937 Indian provincial elections"

West Punjab was a province in the Dominion of Pakistan from 1947 to 1955. It was established from the western-half of British Punjab, following the independence of Pakistan. The province covered an area of 159,344 km (61,523 sq mi), including much of the current Punjab province and the Islamabad Capital Territory, but excluding the former Princely state of Bahawalpur. Lahore, being the largest city and the cultural centre, served as the capital of the province. The province was composed of four divisions (Lahore, Sargodha, Multan and Rawalpindi) and was bordered by the state of Bahawalpur to the south-east, the province of Baluchistan to the south-west and Sind to the south, North-West Frontier Province to the north-west, and Azad Jammu and Kashmir to the north. It shared International border with Indian state of East Punjab to the east and Indian-administered Jammu & Kashmir to the north-east. It was dissolved and merged into West Pakistan upon creation of One Unit Scheme, in 1955.

The One Unit Scheme (Urdu: ون یونٹ; Bengali: এক ইউনিট ব্যবস্থা) was the reorganisation of the provinces of Pakistan by the central Pakistani government. It was led by Prime Minister Muhammad Ali Bogra on 22 November 1954 and enacted on 30 September 1955. The government claimed that the programme would overcome the difficulty of administering the two non-contiguous, unequal polities of West and East Pakistan separated from each other by more than a thousand miles. To diminish the differences between the two regions, the 'One Unit' programme merged the four provinces of West Pakistan (West Punjab, Sind, the North-West Frontier Province (NWFP) and Baluchistan) into a single province to parallel the province of East Pakistan (now Bangladesh).

The One Unit program met with great resistance and grievances were raised by the four provinces after its establishment. As per scholar Julien Levesque, the One Unit project had mainly been pushed by the Punjabi elite of West Pakistan since 1953 with the aim of preventing politicians from East Pakistan from gaining power at the centre. The National Awami Party successfully sponsored a bill in the National Assembly calling for its dissolution and providing for regional autonomy. This led to the military takeover of the national government. The One Unit programme remained in effect until 1970. Finally, President General Yahya Khan imposed Legal Framework Order No. 1970 to end the One Unit program and reinstate the provisional status of the Four Provinces as of August 1947.

Las Bela (Urdu: لسبیلہ) was a princely state in a subsidiary alliance with British India (later a princely state of Pakistan) which existed until 1955. The state occupied an area of 18,254 km (7,048 sq mi) in the extreme southeast of the Balochistan region, with an extensive coastline on the Arabian Sea to the south. Las Bela was bordered by the princely states of Kalat and Makran to the north and west. To the east lay the province of Sind and to the southeast lay the Federal Capital Territory around the city of Karachi.

Sindhis in India (Devanagari: सिन्धी, Sindhī, Naskh script: سنڌي) refer to a socio-ethnic group of Sindhi people living in the Republic of India, originating from Sindh (a province of modern-day Pakistan).

After the 1947 Partition of India into the dominions of new Muslim-majority Pakistan and remaining Hindu-majority India, a million non-Muslim Sindhis migrated to independent India. As per the 2011 census of India, there are 2,772,364 Sindhi speakers in the Indian Republic. However, this number does not include ethnic Sindhis who no longer speak the language and also includes Kutchis who may not identify as ethnic Sindhis (especially those in Gujarat).