A Sampath is currently representing the Attingal Constituency in Lok Sabha. After having his schooling from Govt. Model High school, Sampath has done his Masters Degree in Economics from Govt. Arts College Thiruvananthapuram. After completing LL.M (Constt. Law) from Govt. Law College Thiruvananthapuram, he moved forward finishing Ph.D (Law) from University of Kerala. He got qualified with UGC (NET), Certificate in Russian (All India Institute of Russian Language, New Delhi) and Diploma in Computer Management (ER&DC). Sampath got elected to the 11th Loksabha from the Chirayinkeezhu Constituency, Thiruvananthapuram District in 1996. In the 2009 & 2014, A Sampath was elected from Attingal Parliament Constituency which is the reconstituted Chirayinkeezhu Constituency.