“There is a Long List of Congress Leaders behind Narendra Modi's Success". IBN Live, 16 May 2014.
A great deal of literature on all these topics available in both the “Economic and Political Weekly' and “Macroscan”. Another scholarly article of interest is Sharif, Gujarat Shining.
A minor classic on this topic, well worth the read even though it was published several decades ago, is Kochanek, Business and Politics in India. A more recent monograph is Ghosh, Business and Polity.
For a detailed analysis of its social composition and modus operandi, see K. K. Sruthijith, "Modi's Land slide I his Powerhouse Nonprofit just Changed Campaigning in India Forever", Quartz, 16 June 2014.
“The Hand behind Modi's Magic”, The Hindu, 27 April 2014; “Team Modi sets New Benchmarks for Online Campaign”, The Hindu, 18 May 2014; “Lessons From Narendra Modi's Media Campaign”, India. Real Time, 11 June 2014.
Basu and Misra, BJP’s Demographic Dividend, 11, https://www.umass.edu/ economics/publicaiicms/2014-06.pdf.
Many other newspapers stressed the importance of first-time voters. For a different view, see D. D'Souza's “2014 General Election: 150 Million Young Voters?” Live Mint, 30 January 2014.
“Sonia Gandhi puts Son Rahul in Charge as she Flies Abroad for Surgery", The Guardian, 4 August f 2011; "The Omerta on Sonia Gandhi's Illness", The Hindu, 22 September 2011.
“Connecting with Youth: Modi has Edge over Rahul”, Hindustan Times, 22 August 2013.
“Narendra Modi: From Humble Tea Boy to India's Prime Minister-elect”, The Straits Times, 17 May2014.
“Why RSS is against Narendra Modi as NDA's PM Candidate?” One India News, 23 October 2012; “Divisive Modi is Still a Thorn for the BJP", The Free Press Journal, 7 December 2012; "RSS not Ready for PM Modi”, The Sunday Guardian 2 February 2013.