Nirmala Sitharaman joined Narendra Modi's ministry in May 2014. Until then, she was working as a part of a team of six spokespersons headed by Ravi Shankar Prasad, for Bharatiya Janata Party.
She joined the BJP in 2006 even as her husband Dr. Parakala Prabhakar joined the Prajarajyam party floated by filmstar Chiranjeevi in 2007. While her husband grew disillusioned with Chiranjeevi's party and felt the need to quit the PRP that spoke of social justice. In the early 2000s, Dr Prabhakar was the spokesperson of the Andhra Pradesh unit of the BJP. Meanwhile, Nirmala was slowly gaining in popularity in the BJP. It was during Nitin Gadkari's tenure as BJP president that Nirmala Sitharaman was enlisted as one of the six party spokespersons in March 2010.
Since then, she has been a regular on the news TV channels defending her BJP and its leaders including Narendra Modi. Interestingly, as party spokesperson, she became quite popular in the Modi-ruled Gujarat than in Delhi, where the BJP headquarters is based.
As a visible spokesperson of the BJP, Nirmala played an important role in the run up to the 2014 elections by effectively projecting the Modi-for-PM message. And even before the elections were held, it was a mass presumption in political circles that if the NDA indeed came to power, then Nirmala would make it to the Narendra Modi cabinet. In an election that not many thought would be that one-sided, the BJP vanquished the Congress with the former managing to get a simple majority on its own.
On May 26, Nirmala Sitharaman was sworn in as Minister of State (Independent Charge) for Ministry of Commerce & Industry, as well as a Minister of State for Finance and Corporate Affairs which fall under the Ministry of Finance headed by Arun Jaitley.