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:
2014 Newark by-election
Table title:
Result
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 class="highlighted"  colspan=1 rowspan=1 > Conservative </td><td class="highlighted"  colspan=1 rowspan=1 > Robert Jenrick </td><td colspan=1 rowspan=1 > 17,431 </td><td colspan=1 rowspan=1 > 45.0 </td><td colspan=1 rowspan=1 > 8.9 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > UKIP </td><td colspan=1 rowspan=1 > Roger Helmer </td><td colspan=1 rowspan=1 > 10,028 </td><td colspan=1 rowspan=1 > 25.9 </td><td colspan=1 rowspan=1 > +22.1 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Labour </td><td colspan=1 rowspan=1 > Michael Payne </td><td colspan=1 rowspan=1 > 6,842 </td><td colspan=1 rowspan=1 > 17.7 </td><td colspan=1 rowspan=1 > 4.7 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Paul Baggaley </td><td colspan=1 rowspan=1 > 1,891 </td><td colspan=1 rowspan=1 > 4.9 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Green </td><td colspan=1 rowspan=1 > David Kirwan </td><td colspan=1 rowspan=1 > 1,057 </td><td colspan=1 rowspan=1 > 2.7 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Liberal Democrat </td><td colspan=1 rowspan=1 > David Watts </td><td colspan=1 rowspan=1 > 1,004 </td><td colspan=1 rowspan=1 > 2.6 </td><td colspan=1 rowspan=1 > 17.4 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Monster Raving Loony </td><td colspan=1 rowspan=1 > Nick The Flying Brick </td><td colspan=1 rowspan=1 > 168 </td><td colspan=1 rowspan=1 > 0.4 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Andy Hayes </td><td colspan=1 rowspan=1 > 117 </td><td colspan=1 rowspan=1 > 0.3 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Bus-Pass Elvis </td><td colspan=1 rowspan=1 > David Bishop </td><td colspan=1 rowspan=1 > 87 </td><td colspan=1 rowspan=1 > 0.2 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Common Good </td><td colspan=1 rowspan=1 > Dick Rodgers </td><td colspan=1 rowspan=1 > 64 </td><td colspan=1 rowspan=1 > 0.2 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Patriotic Socialist Party </td><td colspan=1 rowspan=1 > Lee Woods </td><td colspan=1 rowspan=1 > 18 </td><td colspan=1 rowspan=1 > 0.0 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <th colspan=3 rowspan=1 > Majority </th><td class="highlighted"  colspan=1 rowspan=1 > 7,403 </td><td colspan=1 rowspan=1 > 19.1 </td><td colspan=1 rowspan=1 > 12.4 </td></tr>
<tr> <th colspan=3 rowspan=1 > Turnout </th><td colspan=1 rowspan=1 > 38,707 </td><td colspan=1 rowspan=1 > 52.79 </td><td colspan=1 rowspan=1 > 19.61 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=2 rowspan=1 > Conservative hold </td><th colspan=1 rowspan=1 > Swing </th><td colspan=1 rowspan=1 > 15.5 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Who won the 2014 Newark by-election and by what margin?
Answer:
Conservative Robert Jenrick won with a majority of 7,403.