Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Revolutionary Communist Party of Britain (Marxist–Leninist)
Table title:
October 1974 UK general election
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Constituency </th><th colspan=1 rowspan=1 > Candidate </th><th colspan=1 rowspan=1 > Votes </th><th colspan=1 rowspan=1 > Percentage </th><th colspan=1 rowspan=1 > Position </th></tr>
<tr> <td colspan=1 rowspan=1 > Battersea North </td><td colspan=1 rowspan=1 > Carole Reakes </td><td colspan=1 rowspan=1 > 102 </td><td colspan=1 rowspan=1 > 0.4 </td><td colspan=1 rowspan=1 > 5 </td></tr>
<tr> <td colspan=1 rowspan=1 > Birmingham Handsworth </td><td colspan=1 rowspan=1 > J. L. Hutchinson </td><td colspan=1 rowspan=1 > 103 </td><td colspan=1 rowspan=1 > 0.3 </td><td colspan=1 rowspan=1 > 5 </td></tr>
<tr> <td colspan=1 rowspan=1 > Brighton Kemptown </td><td colspan=1 rowspan=1 > John Buckle </td><td colspan=1 rowspan=1 > 125 </td><td colspan=1 rowspan=1 > 0.3 </td><td colspan=1 rowspan=1 > 5 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bristol South East </td><td colspan=1 rowspan=1 > P. Rowe </td><td colspan=1 rowspan=1 > 79 </td><td colspan=1 rowspan=1 > 0.1 </td><td colspan=1 rowspan=1 > 6 </td></tr>
<tr> <td colspan=1 rowspan=1 > Cardiff South East </td><td colspan=1 rowspan=1 > B. C. D. Harris </td><td colspan=1 rowspan=1 > 75 </td><td colspan=1 rowspan=1 > 0.2 </td><td colspan=1 rowspan=1 > 5 </td></tr>
<tr> <td colspan=1 rowspan=1 > Lambeth Central </td><td colspan=1 rowspan=1 > Peter John Bratton </td><td colspan=1 rowspan=1 > 88 </td><td colspan=1 rowspan=1 > 0.3 </td><td colspan=1 rowspan=1 > 5 </td></tr>
<tr> <td colspan=1 rowspan=1 > Leicester South </td><td colspan=1 rowspan=1 > G. H. Rousseau </td><td colspan=1 rowspan=1 > 136 </td><td colspan=1 rowspan=1 > 0.3 </td><td colspan=1 rowspan=1 > 5 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Portsmouth South </td><td colspan=1 rowspan=1 > A. D. Rifkin </td><td class="highlighted"  colspan=1 rowspan=1 > 612 </td><td class="highlighted"  colspan=1 rowspan=1 > 1.2 </td><td colspan=1 rowspan=1 > 4 </td></tr>
</table>
Question:
What is Revolutionary Communist Party of Britain highest recorded vote?
Answer:
Revolutionary Communist Party of Britain highest recorded vote was 612 (1.2%) by Candidate A. D. Rifkin in Portsmouth South, during the 1974 general election.