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:
1973 Swedish general election
Table title:
Results
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Party </th><th colspan=1 rowspan=1 > Votes </th><th colspan=1 rowspan=1 > % </th><th colspan=1 rowspan=1 > Seats </th><th colspan=1 rowspan=1 > +/– </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Swedish Social Democratic Party </td><td colspan=1 rowspan=1 > 2,247,727 </td><td colspan=1 rowspan=1 > 43.6 </td><td class="highlighted"  colspan=1 rowspan=1 > 156 </td><td colspan=1 rowspan=1 > –7 </td></tr>
<tr> <td colspan=1 rowspan=1 > Centre Party </td><td colspan=1 rowspan=1 > 1,295,246 </td><td colspan=1 rowspan=1 > 25.1 </td><td colspan=1 rowspan=1 > 90 </td><td colspan=1 rowspan=1 > +19 </td></tr>
<tr> <td colspan=1 rowspan=1 > Moderate Party </td><td colspan=1 rowspan=1 > 737,584 </td><td colspan=1 rowspan=1 > 14.3 </td><td colspan=1 rowspan=1 > 51 </td><td colspan=1 rowspan=1 > +10 </td></tr>
<tr> <td colspan=1 rowspan=1 > People's Party </td><td colspan=1 rowspan=1 > 486,028 </td><td colspan=1 rowspan=1 > 9.4 </td><td colspan=1 rowspan=1 > 34 </td><td colspan=1 rowspan=1 > –24 </td></tr>
<tr> <td colspan=1 rowspan=1 > Left Party Communists </td><td colspan=1 rowspan=1 > 274,929 </td><td colspan=1 rowspan=1 > 5.3 </td><td colspan=1 rowspan=1 > 19 </td><td colspan=1 rowspan=1 > +2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Christian Democratic Unity </td><td colspan=1 rowspan=1 > 90,388 </td><td colspan=1 rowspan=1 > 1.8 </td><td colspan=1 rowspan=1 > 0 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <td colspan=1 rowspan=1 > Communist Party of Sweden </td><td colspan=1 rowspan=1 > 18,923 </td><td colspan=1 rowspan=1 > 0.4 </td><td colspan=1 rowspan=1 > 0 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <td colspan=1 rowspan=1 > Communist League Marxist-Leninist (Revolutionaries) </td><td colspan=1 rowspan=1 > 8,014 </td><td colspan=1 rowspan=1 > 0.2 </td><td colspan=1 rowspan=1 > 0 </td><td colspan=1 rowspan=1 > New </td></tr>
<tr> <td colspan=1 rowspan=1 > Other parties </td><td colspan=1 rowspan=1 > 1,307 </td><td colspan=1 rowspan=1 > 0.0 </td><td colspan=1 rowspan=1 > 0 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <td colspan=1 rowspan=1 > Invalid/blank votes </td><td colspan=1 rowspan=1 > 8,850 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Total </td><td colspan=1 rowspan=1 > 5,168,996 </td><td colspan=1 rowspan=1 > 100 </td><td class="highlighted"  colspan=1 rowspan=1 > 350 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <td colspan=1 rowspan=1 > Registered voters/turnout </td><td colspan=1 rowspan=1 > 5,690,333 </td><td colspan=1 rowspan=1 > 90.8 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td colspan=5 rowspan=1 > Source: Nohlen & Stöver </td></tr>
</table>
Question:
What was the largest party during the 1973 Swedish general election? 
Answer:
The Social Democratic remained the largest party, winning 156 of the 350 seats.