Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Constituency | Winner | Party | Margin | Runner-up a | Party a |
| --- | --- | --- | --- | --- | --- |
| Madras North | Krishnan Manoharan | DMK | 51594.0 | S. G. Vinayaga Moorthy | NCO |
| Madras South | Murasoli Maran | DMK | 20341.0 | Narasimhan | SWA |
| Sriperumbudur (SC) | T. S. Lakshmanan | DMK | 100046.0 | P. Kakkan | NCO |
| Chengalpattu | C. Chitti Babu | DMK | 118756.0 | P. M. Muthukumarappa | NCO |
| Tiruttani | O. V. Alagesa Mudaliar | INC | 84105.0 | P. Ramachandran | NCO |
| Vellore (SC) | R. P. Ulaganambi | DMK | 85321.0 | T. Manavalan | NCO |
| Tiruppattur | C. K. Chinnaraji Gounder | DMK | 55063.0 | N. Parthasarathy | SWA |
| Vandavasi | G. Viswanathan | DMK | 87955.0 | A. Krishnaswamy | NCO |
| Tindivanam | M. R. Lakshmi Narayanan | INC | 61475.0 | M. P. Radhakrishnan | SWA |
| Cuddalore | S. Radhakrishnan | INC | 36487.0 | R. Muthukumaran | NCO |
| Chidambaram (SC) | V. Mayavan | DMK | 22398.0 | L. Elaya Perumal | NCO |
| Kallakurichi | M. Deiveekan | DMK | 21976.0 | K. Veerasamy | NCO |
| Krishnagiri | T. Thirthagiri Gounder | INC | 34920.0 | T. M. Thirupathy | SWA |
| Salem | E. R. Krishnan | DMK | 54796.0 | M. P. Subramanyam | NCO |
| Mettur | G. Bhuvarahan | INC | 66140.0 | K. Ramamurthy | NCO |
| Tiruchengode | M. Muthusami | DMK | 60047.0 | T. M. Kaliannan | NCO |
| Nilgiris | J. Matha Gowder | DMK | 61094.0 | Akkamma Devi | NCO |
| Coimbatore | K. Balathandayutham | CPI | 77053.0 | Ramaswamy | NCO |
| Pollachi | Narayanan | DMK | 126206.0 | K. R. Nallasivam | SSP |
| Dharapuram (SC) | C. T. Dhandapani | DMK | 116186.0 | K. Paramalai | NCO |
| Gobichettipalayam | P. A. Saminathan | DMK | 60492.0 | E. V. K. Sampath | NCO |
| Periyakulam | S. M. Mohammad Sheriff | IND/ IUML | 41925.0 | H. Ajmal Khan | SWA |
| Dindigul | M. Rajangam | DMK | 97635.0 | M. Cheemachamy | SWA |
| Madurai | R. V. Swaminathan | INC | 72359.0 | S. Chinnakaruppa Thevar | NCO |
| Karur | K. Gopal | INC | 73293.0 | V. Ramanathan | NCO |
| Tiruchirappalli | M. Kalyanasundaram | CPI | 20550.0 | S. P. Thangavelu | NCO |
| Perambalur (SC) | A. Durairaju | DMK | 61569.0 | M. Ayyakannu | NCO |
| Pudukkottai | K. Veeriah | DMK | 48395.0 | R. Vijaya Raghunatha Thondaiman | NCO |
| Kumbakonam | Era Sezhiyan | DMK | 38753.0 | C. R. Ramasamy | NCO |
| Mayuram | K. Subravelu | DMK | 66373.0 | K. Rajangam | NCO |
| Nagapattinam | M. Kathamuthu | CPI | 87727.0 | V. Sabasivam | NCO |
| Thanjavur | S. D. Somasundaram | DMK | 100008.0 | R. Krishnasamy Gopalar | NCO |
| Sivaganga | Tha. Kiruttinan | DMK | 100008.0 | Kannappa Valliappan | NCO |
| Ramanathapuram | P. K. Mookiah Thevar | FBL | 69155.0 | S. Balakrishnan | NCO |
| Sivakasi | V. Jeyalakshmi | INC | 85662.0 | R. Gopalakrishnan | SWA |
| Tirunelveli | S. A. Muruganantham | CPI | 59937.0 | S. Palaniswaminathan | SWA |
| Tenkasi (SC) | A. M. Chellachami | INC | 68910.0 | R. S. Arumugam | NCO |
| Tiruchendur | M. S. Sivasamy | DMK | 26.0 | M. Mathias | SWA |
Question:
What is the margin when periyakulam is the constituency?
Answer:
41925.0