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:
Blaenau Gwent (UK Parliament constituency)
Table title:
Elections in the 2010s
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 > Labour </td><td class="highlighted"  colspan=1 rowspan=1 > Nick Smith </td><td colspan=1 rowspan=1 > 16,974 </td><td colspan=1 rowspan=1 > 52.4 </td><td colspan=1 rowspan=1 > +20.1 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Blaenau Gwent PV </td><td colspan=1 rowspan=1 > Dai Davies </td><td colspan=1 rowspan=1 > 6,458 </td><td colspan=1 rowspan=1 > 19.9 </td><td colspan=1 rowspan=1 > −38.2 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Liberal Democrat </td><td colspan=1 rowspan=1 > Matt Smith </td><td colspan=1 rowspan=1 > 3,285 </td><td colspan=1 rowspan=1 > 10.1 </td><td colspan=1 rowspan=1 > +5.9 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Conservative </td><td colspan=1 rowspan=1 > Liz Stevenson </td><td colspan=1 rowspan=1 > 2,265 </td><td colspan=1 rowspan=1 > 7.0 </td><td colspan=1 rowspan=1 > +4.7 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Plaid Cymru </td><td colspan=1 rowspan=1 > Rhodri Davies </td><td colspan=1 rowspan=1 > 1,333 </td><td colspan=1 rowspan=1 > 4.1 </td><td colspan=1 rowspan=1 > −2.4 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > BNP </td><td colspan=1 rowspan=1 > Anthony King </td><td colspan=1 rowspan=1 > 1,211 </td><td colspan=1 rowspan=1 > 3.7 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > UKIP </td><td colspan=1 rowspan=1 > Michael Kocan </td><td colspan=1 rowspan=1 > 488 </td><td colspan=1 rowspan=1 > 1.5 </td><td colspan=1 rowspan=1 > +1.0 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Socialist Labour </td><td colspan=1 rowspan=1 > Alyson O'Connell </td><td colspan=1 rowspan=1 > 381 </td><td colspan=1 rowspan=1 > 1.2 </td><td colspan=1 rowspan=1 > +1.2 </td></tr>
<tr> <th colspan=3 rowspan=1 > Majority </th><td colspan=1 rowspan=1 > 10,516 </td><td colspan=1 rowspan=1 > 32.5 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <th colspan=3 rowspan=1 > Turnout </th><td colspan=1 rowspan=1 > 32,395 </td><td colspan=1 rowspan=1 > 61.8 </td><td colspan=1 rowspan=1 > −4.4 </td></tr>
<tr> <th colspan=3 rowspan=1 > Registered electors </th><td colspan=1 rowspan=1 > 52,442 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=2 rowspan=1 > Labour gain from Blaenau Gwent PV </td><th class="highlighted"  colspan=1 rowspan=1 > Swing </th><td class="highlighted"  colspan=1 rowspan=1 > +29.2 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Which Labour candidate won the 2010 Blaenau Gwent election and what was the swing vote percentage?
Answer:
In the 2010 election, Labour candidate Nick Smith gained the Blaenau Gwent (UK Parliament constituency) with a 29.2% swing.