Table:
text: Indian general election in Tamil Nadu, 1971
List of Elected MPs
List of Elected MPs
Constituency Winner Party Margin Runner_up_a Party_a
Periyakulam S. M. Mohammad Sheriff IND/ IUML 41925 H. Ajmal Khan SWA
Dindigul M. Rajangam DMK 97635 M. Cheemachamy SWA
Madurai R. V. Swaminathan INC 72359 S. Chinnakaruppa Thevar NCO
Karur K. Gopal INC 73293 V. Ramanathan NCO
Tiruchirappalli M. Kalyanasundaram CPI 20550 S. P. Thangavelu NCO
Perambalur (SC) A. Durairaju DMK 61569 M. Ayyakannu NCO
Pudukkottai K. Veeriah DMK 48395 R. Vijaya Raghunatha Thondaiman NCO
Kumbakonam Era Sezhiyan DMK 38753 C. R. Ramasamy NCO
Mayuram K. Subravelu DMK 66373 K. Rajangam NCO
Nagapattinam M. Kathamuthu CPI 87727 V. Sabasivam NCO
Thanjavur S. D. Somasundaram DMK 100008 R. Krishnasamy Gopalar NCO
Sivaganga Tha. Kiruttinan DMK 100008 Kannappa Valliappan NCO

Question: Considering the 1971 Indian General Election in Tamil Nadu, what is the margin if Periyakulam is the constituency?