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:
2012 United States Senate elections
Table title:
Missouri
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=2 rowspan=1 > Party </th><th colspan=1 rowspan=1 > Candidate </th><th colspan=1 rowspan=1 > Votes </th><th colspan=1 rowspan=1 > % </th><th colspan=1 rowspan=1 > ± </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Democratic </td><td class="highlighted"  colspan=1 rowspan=1 > Claire McCaskill (Incumbent) </td><td colspan=1 rowspan=1 > 1,484,683 </td><td colspan=1 rowspan=1 > 54.71% </td><td colspan=1 rowspan=1 > +5.13% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Republican </td><td class="highlighted"  colspan=1 rowspan=1 > Todd Akin </td><td colspan=1 rowspan=1 > 1,063,698 </td><td colspan=1 rowspan=1 > 39.20% </td><td colspan=1 rowspan=1 > 8.11% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Libertarian </td><td colspan=1 rowspan=1 > Jonathan Dine </td><td colspan=1 rowspan=1 > 164,991 </td><td colspan=1 rowspan=1 > 6.08% </td><td colspan=1 rowspan=1 > +3.83% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Write-ins </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 251 </td><td colspan=1 rowspan=1 > 0.01% </td><td colspan=1 rowspan=1 > n/a </td></tr>
<tr> <th colspan=3 rowspan=1 > Margin of victory </th><td class="highlighted"  colspan=1 rowspan=1 > 420,985 </td><td class="highlighted"  colspan=1 rowspan=1 > 15.51% </td><td colspan=1 rowspan=1 > +13.24% </td></tr>
<tr> <th colspan=3 rowspan=1 > Turnout </th><td colspan=1 rowspan=1 > 2,713,623 </td><td colspan=1 rowspan=1 > 64.75% </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
When they found in highest vote of magin victory?
Answer:
McCaskill defeated Akin by a 15.5% margin of victory and a vote margin of 420,985.