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:
1968 United States presidential election in Washington (state)
Table title:
Results
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 class="highlighted"  colspan=1 rowspan=1 > Democratic </td><td class="highlighted"  colspan=1 rowspan=1 > Hubert Humphrey </td><td colspan=1 rowspan=1 > 616,037 </td><td class="highlighted"  colspan=1 rowspan=1 > 47.23% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > Republican </td><td class="highlighted"  colspan=1 rowspan=1 > Richard Nixon </td><td colspan=1 rowspan=1 > 588,510 </td><td class="highlighted"  colspan=1 rowspan=1 > 45.12% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > American Independent </td><td colspan=1 rowspan=1 > George Wallace </td><td colspan=1 rowspan=1 > 96,990 </td><td colspan=1 rowspan=1 > 7.44% </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Write-in </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 2,744 </td><td colspan=1 rowspan=1 > 0.21% </td></tr>
<tr> <th colspan=3 rowspan=1 > Total votes </th><td colspan=1 rowspan=1 > 1,304,281 </td><td colspan=1 rowspan=1 > 100% </td></tr>
</table>
Question:
Who won the Washington in the 1968 presidential election and by how much?
Answer:
Washington was won by the Democratic candidate, Hubert Humphrey with 47.23 percent of the vote against the Republican candidate, Richard Nixon with 45.12 percent of the vote.