India's main opposition party has outlined its strategy for the upcoming general elections with a vow to wrest control from the scandal-plagued Congress Party.

Bharatiya Janata Party's prime ministerial candidate Narendra Modi on Sunday promised to transform the country if elected in the May elections.

Modi told party supporters gathered in the Indian capital that his priorities include good governance, job creation and rooting out corruption.

The Hindu nationalist Modi is widely seen as a divisive figure and critics have often questioned whether he can be a truly secular leader in a country with many cultures.

Modi called the past decade under Prime Minister Manmohan Singh as India's darkest and urged that he be given a chance to lead the country.