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:
Jennifer Granholm
Table title:
Electoral history
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 > Democratic </td><td class="highlighted"  colspan=1 rowspan=1 > Jennifer Granholm </td><td class="highlighted"  colspan=1 rowspan=1 > 1,633,796 </td><td colspan=1 rowspan=1 > 51.4 </td><td colspan=1 rowspan=1 > n/a </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Republican </td><td class="highlighted"  colspan=1 rowspan=1 > Dick Posthumus </td><td class="highlighted"  colspan=1 rowspan=1 > 1,506,104 </td><td class="highlighted"  colspan=1 rowspan=1 > 47.4 </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 > Douglas Campbell </td><td colspan=1 rowspan=1 > 25,236 </td><td colspan=1 rowspan=1 > 0.8 </td><td colspan=1 rowspan=1 > n/a </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Constitution </td><td colspan=1 rowspan=1 > Joseph Pilchak </td><td colspan=1 rowspan=1 > 12,411 </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 > none </td><td colspan=1 rowspan=1 > Write-in candidates </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 colspan=1 rowspan=1 > 127,692 </td><td colspan=1 rowspan=1 > 4.0 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=3 rowspan=1 > Turnout </th><td colspan=1 rowspan=1 > 3,177,565 </td><td colspan=1 rowspan=1 > 100 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=2 rowspan=1 > Democratic gain from Republican </td><th colspan=1 rowspan=1 > Swing </th><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Who were the top two contenders in the 2002 Michigan gubernatorial election, and how many votes did each candidate earn?
Answer:
Granholm defeated Posthumus by 1,633,796 votes (51.4%) to 1,506,104 votes (47.40%).