Born at Mayyil Panchayat in Kannur district, Sreemathy was elected to the Kerala Legislative Assembly in 2001 and 2006 from Payyanur Assembly constituency.

She was born on 4 May 1949 as the daughter of Kelu Nambiar and P. K. Meenakshi Amma.

Now she is AIDWA State secretary and CPI(M) National Committee Member.

[5] She won the 2014 Lok Sabha election from Kannur Lok Sabha constituency, defeating K. Sudhakaran by a margin of 6566 votes.

She lost to K. Sudhakaran with a margin of 94,559 votes in 2019 Indian General election.