Sobha was the state president of the Mahila Morcha.[8] She was a member of the party's core committee and was the state general secretary of the party.[9] She was later moved from state general secretary to vice-president.[10]
In 2016, there was a close contest and she came second with 40,087 votes.[11]
Sobha, as the party's state general secretary, was then contesting both legislative assembly and general elections on a BJP ticket.
Over the years her election results have been improving the party vote share.[12]
In 2024 general election, she contested from Alappuzha constituency and lost. She managed to make Alappuzha an "A-class" constituency for the BJP, increasing the vote share by 11%. She even managed to finish a very close second (less than 2K votes) in 2 assembly segments of the constituency.[15][16]
After being appointed state vice-president Sobha Surendran was reluctant to take up the post, which triggered a controversy within the Party.[19][20][21][22]
In 2018, during the BJP's protest march against the arrest of K. Surendran in Kannur, Sobha made provocative comments against the police and threatened SP Yathish Chandra.[26] She was arrested by the Kerala Police.[27]
Sobha Surendran was one of the key figures arrested by police in the Sabarimala protests.[28][29][30] She fasted for 48 hours in support of the agitation by PSC job seekers in the PSC rank lists in the Secretariat.[31][32] Subsequently, Sobha met with the Kerala Governor and received assurances that he would act in favor of the job aspirants.[33][34][35]
In November 2020, Sobha alleged that the party president, K. Surendran, had organised a political conspiracy against her, both personally and politically, to end her political career.[36] She wrote a complaint letter to BJP national president JP Nadda and union home minister Amit Shah.[37]