Initially apolitical, the organisation was patronised by the then Chief Minister Vasantrao Naik who used it for curbing trade unions and maintain stranglehold of the Congress.[14][15][16] The organisation at the same time carried out pro-Marathinativist movement in Mumbai in which it agitated for preferential treatment for the Marathi people over migrants from other parts of India.[17]
Although Shiv Sena's primary base always remained in Maharashtra, it tried to expand to a pan-Indian base. In the 1970s, it gradually moved from advocating a pro-Marathi ideology to supporting a broader Hindu nationalist agenda,[18] and aligned itself with the Bharatiya Janata Party (BJP). Shiv Sena took part in Mumbai (BMC) municipal elections for its entire existence. In 1989, it entered into an alliance with the BJP for Lok Sabha as well as Maharashtra Legislative Assembly elections. The alliance in the latter was temporarily broken in the 2014 elections due to seat sharing adjustment, although it was quickly reformed. Shiv Sena was one of the founding members of the BJP-led National Democratic Alliance (NDA) in 1998, and it also participated in Vajpayee Government from 1998 to 2004 and the Narendra Modi Government from 2014 to 2019.
^Kale, Sunila (2014). Electrifying India: Regional Political Economies of Development. Stanford University Press. p. 94.
^Freesden, Michael (2013). Comparative Political Thought. Routledge. p. 82.
^ —Siddharthya Roy (9 December 2019). "Understanding Maharashtra's Political Game of Thrones". The Diplomat. Retrieved 4 January 2020. The ball now was in the court of the BJP's oldest ally in the state as well as at the central level: the Shiv Sena, a regionalist right-wing force, which won 56 seats —Malladi Rama Rao (4 January 2020). "Indian Citizenship Row Did Modi, Shah lose the plot?". BBC. Archived from the original on 3 January 2020. Retrieved 4 January 2020. "Rather than uniting Hindus against Muslims, what the duo have succeeded in doing is to alienate their own hard-core allies, namely the right-wing Shiv Sena and those erring Hindutva fans that had elected the Bharatiya Janata Party government in Assam. —Soutik Biswas (18 July 2019). "Maharashtra: The unravelling of India's BJP and Shiv Sena alliance". Asian Tribune. Retrieved 4 January 2020. Consider this. The 53-year-old Shiv Sena is a stridently right-wing Hindu party. It began as an ethnic, nativist outfit to support the interests of Mumbai's Marathi-speaking people.
^"Bal Thackeray". revolutionarydemocracy.org. 19 November 2012. Retrieved 30 June 2023.
^Patel, Sujata; Thorner, Alice (1995). Bombay: Metaphor for Modern India. Oxford India paperbacks. Oxford University Press. p. 272. ISBN978-0-19-563688-8. The then chief minister of Maharashtra, Vasantrao Naik, deliberately encouraged this newly formed political grouping— despite its narrow concern with Maharashtra for Maharashtrians - to break the stranglehold of the Left unions
^Cite error: The named reference Rediff article: sons of the soil, lungi slogan, shakhas, south Indians in 1970, shift to Hindutva, defeat of communists/ was invoked but never defined (see the help page).
^Ahmed, Z.S.; Balasubramanian, R. (2010). Extremism in Pakistan and India: The Case of the Jamaat-e-Islami and Shiv Sena. Colombo: Regional Centre for Strategic Studies (RCSS).