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:
Tom Corbett
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></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Republican </td><td class="highlighted"  colspan=1 rowspan=1 > Tom Corbett </td><td class="highlighted"  colspan=1 rowspan=1 > 2,172,763 </td><td class="highlighted"  colspan=1 rowspan=1 > 54.5 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Democratic </td><td colspan=1 rowspan=1 > Dan Onorato </td><td class="highlighted"  colspan=1 rowspan=1 > 1,814,788 </td><td class="highlighted"  colspan=1 rowspan=1 > 45.5 </td></tr>
<tr> <th colspan=3 rowspan=1 > Total votes </th><td colspan=1 rowspan=1 > 3,987,551 </td><td colspan=1 rowspan=1 > 100.0 </td></tr>
</table>
Question:
How many votes did Corbett  win by in the election?
Answer:
Corbett defeated Onorato by 2,172,763 votes (54.5%) to 1,814,788 votes (45.5%).