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:
Seth Hammett
Table title:
Political career
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Opponent </th><th colspan=1 rowspan=1 > % Vote for Hammett </th></tr>
<tr> <td colspan=1 rowspan=1 > 1978 </td><td class="highlighted"  colspan=1 rowspan=1 > Mike Purnell </td><td class="highlighted"  colspan=1 rowspan=1 > 67.7% </td></tr>
<tr> <td colspan=1 rowspan=1 > 1982 </td><td colspan=1 rowspan=1 > Louie Grimes </td><td colspan=1 rowspan=1 > 60.4% </td></tr>
<tr> <td colspan=1 rowspan=1 > 1986 </td><td colspan=1 rowspan=1 > Unopposed </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1990 </td><td colspan=1 rowspan=1 > Unopposed </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1994 </td><td colspan=1 rowspan=1 > B. Martin and D. Phillips </td><td colspan=1 rowspan=1 > 56.3% </td></tr>
<tr> <td colspan=1 rowspan=1 > 1998 </td><td colspan=1 rowspan=1 > Unopposed </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2002 </td><td colspan=1 rowspan=1 > Roger Broxton </td><td colspan=1 rowspan=1 > 70.3% </td></tr>
</table>
Question:
What is political career of Seth Hammett in 1978?
Answer:
In 1978, Seth Hammett ran against Mike Purnell and received 67.7% of the vote.