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:
2008 Henley by-election
Table title:
General Election 2005 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 colspan=1 rowspan=1 > Conservative </td><td class="highlighted"  colspan=1 rowspan=1 > Boris Johnson </td><td colspan=1 rowspan=1 > 24,894 </td><td colspan=1 rowspan=1 > 53.5 </td><td colspan=1 rowspan=1 > +7.4 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > Liberal Democrat </td><td colspan=1 rowspan=1 > David Turner </td><td colspan=1 rowspan=1 > 12,101 </td><td colspan=1 rowspan=1 > 26.0 </td><td colspan=1 rowspan=1 > –1.0 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Labour </td><td colspan=1 rowspan=1 > Kaleem Saeed </td><td colspan=1 rowspan=1 > 6,862 </td><td colspan=1 rowspan=1 > 14.7 </td><td colspan=1 rowspan=1 > –6.4 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Green </td><td colspan=1 rowspan=1 > Mark Stevenson </td><td colspan=1 rowspan=1 > 1,518 </td><td colspan=1 rowspan=1 > 3.3 </td><td colspan=1 rowspan=1 > +0.7 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > UKIP </td><td colspan=1 rowspan=1 > Delphine Gray-Fisk </td><td colspan=1 rowspan=1 > 1,162 </td><td colspan=1 rowspan=1 > 2.5 </td><td colspan=1 rowspan=1 > –0.7 </td></tr>
<tr> <th colspan=3 rowspan=1 > Majority </th><td class="highlighted"  colspan=1 rowspan=1 > 12,793 </td><td colspan=1 rowspan=1 > 27.5 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=3 rowspan=1 > Turnout </th><td colspan=1 rowspan=1 > 46,537 </td><td colspan=1 rowspan=1 > 67.9 </td><td colspan=1 rowspan=1 > +3.6 </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 > +4.2 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Which candidate won and by what majority of votes against the Liberal Democrats in the 2005 General election preceding the 2008 Henley by-election?
Answer:
Johnson had gained 12,793 majority, from the Liberal Democrats at the election.