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:
1920 Louth 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 > Liberal </td><td class="highlighted"  colspan=1 rowspan=1 > Thomas Wintringham </td><td colspan=1 rowspan=1 > 9,859 </td><td colspan=1 rowspan=1 > 57.3 </td><td colspan=1 rowspan=1 > +11.8 </td></tr>
<tr> <td colspan=1 rowspan=1 > C </td><td colspan=1 rowspan=1 > Unionist </td><td colspan=1 rowspan=1 > Christopher Hatton Turnor </td><td colspan=1 rowspan=1 > 7,354 </td><td colspan=1 rowspan=1 > 42.7 </td><td colspan=1 rowspan=1 > −11.8 </td></tr>
<tr> <th colspan=3 rowspan=1 > Majority </th><td colspan=1 rowspan=1 > 2,505 </td><td colspan=1 rowspan=1 > 14.6 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=3 rowspan=1 > Turnout </th><td colspan=1 rowspan=1 > 17,213 </td><td colspan=1 rowspan=1 > 63.1 </td><td colspan=1 rowspan=1 > +2.8 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=2 rowspan=1 > Liberal gain from Unionist </td><th class="highlighted"  colspan=1 rowspan=1 > Swing </th><td class="highlighted"  colspan=1 rowspan=1 > +11.8 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=6 rowspan=1 > C indicates candidate endorsed by the coalition government. </td></tr>
</table>
Question:
Who was the Liberal candidate in the 1920 Louth by-election, and what percentage of swing vote liberal gain was there from unionists?
Answer:
Thomas Wintringham was a candidate of the Liberal party, gain the seat from Unionists with 11.8% swing in 1920 Louth by-election.