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:
85th United States Congress
Table title:
Senate
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > State (class) </th><th colspan=1 rowspan=1 > Vacator </th><th colspan=1 rowspan=1 > Reason for change </th><th colspan=1 rowspan=1 > Successor </th><th colspan=1 rowspan=1 > Date of successor's formal installation </th></tr>
<tr> <td colspan=1 rowspan=1 > Texas (1) </td><td colspan=1 rowspan=1 > Price Daniel (D) </td><td colspan=1 rowspan=1 > Resigned January 14, 1957, after being elected Governor of Texas. Successor appointed January 15, 1957. </td><td colspan=1 rowspan=1 > William A. Blakley (D) </td><td colspan=1 rowspan=1 > January 15, 1957 </td></tr>
<tr> <td colspan=1 rowspan=1 > Texas (1) </td><td colspan=1 rowspan=1 > William A. Blakley (D) </td><td colspan=1 rowspan=1 > Interim appointee retired when successor elected. Successor elected April 28, 1957. </td><td colspan=1 rowspan=1 > Ralph Yarborough (D) </td><td colspan=1 rowspan=1 > April 29, 1957 </td></tr>
<tr> <td colspan=1 rowspan=1 > Wisconsin (1) </td><td class="highlighted"  colspan=1 rowspan=1 > Joseph McCarthy (R) </td><td class="highlighted"  colspan=1 rowspan=1 > Died May 2, 1957. Successor elected August 27, 1957. </td><td class="highlighted"  colspan=1 rowspan=1 > William Proxmire (D) </td><td class="highlighted"  colspan=1 rowspan=1 > August 28, 1957 </td></tr>
<tr> <td colspan=1 rowspan=1 > West Virginia (2) </td><td colspan=1 rowspan=1 > Matthew M. Neely (D) </td><td colspan=1 rowspan=1 > Died January 18, 1958. Successor appointed January 25, 1958. </td><td colspan=1 rowspan=1 > John D. Hoblitzell, Jr. (R) </td><td colspan=1 rowspan=1 > January 25, 1958 </td></tr>
<tr> <td colspan=1 rowspan=1 > North Carolina (2) </td><td colspan=1 rowspan=1 > W. Kerr Scott (D) </td><td colspan=1 rowspan=1 > Died April 16, 1958. Successor appointed April 19, 1958, and then elected November 4, 1958. </td><td colspan=1 rowspan=1 > B. Everett Jordan (D) </td><td colspan=1 rowspan=1 > April 19, 1958 </td></tr>
<tr> <td colspan=1 rowspan=1 > West Virginia (2) </td><td colspan=1 rowspan=1 > John D. Hoblitzell, Jr. (R) </td><td colspan=1 rowspan=1 > Interim appointee lost special election. Successor elected November 4, 1958. </td><td colspan=1 rowspan=1 > Jennings Randolph (D) </td><td colspan=1 rowspan=1 > November 4, 1958 </td></tr>
<tr> <td colspan=1 rowspan=1 > California (1) </td><td colspan=1 rowspan=1 > William F. Knowland (R) </td><td colspan=1 rowspan=1 > Resigned early January 2, 1959. </td><td colspan=1 rowspan=1 > Vacant </td><td colspan=1 rowspan=1 > Not filled this term </td></tr>
</table>
Question:
How was William Proxmire (D) been succeeded as a senator?
Answer:
William Proxmire (D) was a senator until his death on May 2, 1957 and was succeeded by Joseph McCarthy (R) who took office on August 28, 1957.