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:
1981 French presidential election
Table title:
Results
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=2 rowspan=2 > Candidates </th><th colspan=2 rowspan=2 > Parties </th><th colspan=2 rowspan=1 > 1st round </th><th colspan=2 rowspan=1 > 2nd round </th></tr>
<tr> <th colspan=1 rowspan=1 > Votes </th><th colspan=1 rowspan=1 > % </th><th colspan=1 rowspan=1 > Votes </th><th colspan=1 rowspan=1 > % </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > Valéry Giscard d'Estaing </td><td class="highlighted"  colspan=1 rowspan=1 > Union for French Democracy </td><td colspan=1 rowspan=1 > UDF </td><td colspan=1 rowspan=1 > 8,222,432 </td><td colspan=1 rowspan=1 > 28.32% </td><td class="highlighted"  colspan=1 rowspan=1 > 14,642,306 </td><td class="highlighted"  colspan=1 rowspan=1 > 48.24% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > François Mitterrand </td><td class="highlighted"  colspan=1 rowspan=1 > Socialist Party </td><td colspan=1 rowspan=1 > PS </td><td colspan=1 rowspan=1 > 7,505,960 </td><td colspan=1 rowspan=1 > 25.85% </td><td class="highlighted"  colspan=1 rowspan=1 > 15,708,262 </td><td class="highlighted"  colspan=1 rowspan=1 > 51.76% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Jacques Chirac </td><td colspan=1 rowspan=1 > Rally for the Republic </td><td colspan=1 rowspan=1 > RPR </td><td colspan=1 rowspan=1 > 5,225,848 </td><td colspan=1 rowspan=1 > 18.00% </td><td colspan=2 rowspan=8 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Georges Marchais </td><td colspan=1 rowspan=1 > French Communist Party </td><td colspan=1 rowspan=1 > PCF </td><td colspan=1 rowspan=1 > 4,456,922 </td><td colspan=1 rowspan=1 > 15.35% </td></tr>
<tr> <td colspan=1 rowspan=1 > Brice Lalonde </td><td colspan=1 rowspan=1 > Political Ecology Movement </td><td colspan=1 rowspan=1 > MEP </td><td colspan=1 rowspan=1 > 1,126,254 </td><td colspan=1 rowspan=1 > 3.88% </td></tr>
<tr> <td colspan=1 rowspan=1 > Arlette Laguiller </td><td colspan=1 rowspan=1 > Workers' Struggle </td><td colspan=1 rowspan=1 > LO </td><td colspan=1 rowspan=1 > 668,057 </td><td colspan=1 rowspan=1 > 2.30% </td></tr>
<tr> <td colspan=1 rowspan=1 > Michel Crépeau </td><td colspan=1 rowspan=1 > Radical Party of the Left </td><td colspan=1 rowspan=1 > PRG </td><td colspan=1 rowspan=1 > 642,847 </td><td colspan=1 rowspan=1 > 2.21% </td></tr>
<tr> <td colspan=1 rowspan=1 > Michel Debré </td><td colspan=1 rowspan=1 > Gaullist miscellaneous right </td><td colspan=1 rowspan=1 > DVD </td><td colspan=1 rowspan=1 > 481,821 </td><td colspan=1 rowspan=1 > 1.66% </td></tr>
<tr> <td colspan=1 rowspan=1 > Marie-France Garaud </td><td colspan=1 rowspan=1 > Gaullist miscellaneous right </td><td colspan=1 rowspan=1 > DVD </td><td colspan=1 rowspan=1 > 386,623 </td><td colspan=1 rowspan=1 > 1.33% </td></tr>
<tr> <td colspan=1 rowspan=1 > Huguette Bouchardeau </td><td colspan=1 rowspan=1 > Unified Socialist Party </td><td colspan=1 rowspan=1 > PSU </td><td colspan=1 rowspan=1 > 321,353 </td><td colspan=1 rowspan=1 > 1.11% </td></tr>
<tr> <td colspan=8 rowspan=1 >  </td></tr>
<tr> <td colspan=4 rowspan=1 > Total </td><td colspan=1 rowspan=1 > 29,038,117 </td><td colspan=1 rowspan=1 > 100% </td><td colspan=1 rowspan=1 > 30,350,568 </td><td colspan=1 rowspan=1 > 100% </td></tr>
<tr> <td colspan=8 rowspan=1 >  </td></tr>
<tr> <td colspan=4 rowspan=1 > Valid votes </td><td colspan=1 rowspan=1 > 29,038,117 </td><td colspan=1 rowspan=1 > 98.38% </td><td colspan=1 rowspan=1 > 30,350,568 </td><td colspan=1 rowspan=1 > 97.12% </td></tr>
<tr> <td colspan=4 rowspan=1 > Spoilt and null votes </td><td colspan=1 rowspan=1 > 477,965 </td><td colspan=1 rowspan=1 > 1.62% </td><td colspan=1 rowspan=1 > 898,984 </td><td colspan=1 rowspan=1 > 2.88% </td></tr>
<tr> <td colspan=4 rowspan=1 > Turnout </td><td colspan=1 rowspan=1 > 29,516,082 </td><td colspan=1 rowspan=1 > 81.09% </td><td colspan=1 rowspan=1 > 31,249,552 </td><td colspan=1 rowspan=1 > 85.85% </td></tr>
<tr> <td colspan=4 rowspan=1 > Abstentions </td><td colspan=1 rowspan=1 > 6,882,777 </td><td colspan=1 rowspan=1 > 18.91% </td><td colspan=1 rowspan=1 > 5,149,210 </td><td colspan=1 rowspan=1 > 14.15% </td></tr>
<tr> <td colspan=4 rowspan=1 > Registered voters </td><td colspan=1 rowspan=1 > 36,398,859 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 36,398,762 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=8 rowspan=1 >  </td></tr>
<tr> <td colspan=8 rowspan=1 > Table of results ordered by number of votes received in first round. Official results by Constitutional Council of France. </td></tr>
</table>
Question:
What are the parties, votes and percentage of votes by Valéry Giscard d'Estaing and François Mitterrand in 1981 French presidential election?
Answer:
In the 1981 French presidential election, Mitterrand and his Socialist Party received 51.76% of the vote, while Giscard and his Union for French Democracy trailed with about 48.24%, a margin of 1,065,956 votes.