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:
1903 German federal 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 > Social Democratic Party </td><td colspan=1 rowspan=1 > 3,010,800 </td><td colspan=1 rowspan=1 > 31.7 </td><td class="highlighted"  colspan=1 rowspan=1 > 81 </td><td colspan=1 rowspan=1 > +25 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Centre Party </td><td colspan=1 rowspan=1 > 1,875,300 </td><td colspan=1 rowspan=1 > 19.8 </td><td class="highlighted"  colspan=1 rowspan=1 > 100 </td><td colspan=1 rowspan=1 > −2 </td></tr>
<tr> <td colspan=1 rowspan=1 > National Liberal Party </td><td colspan=1 rowspan=1 > 1,317,400 </td><td colspan=1 rowspan=1 > 13.9 </td><td colspan=1 rowspan=1 > 51 </td><td colspan=1 rowspan=1 > +5 </td></tr>
<tr> <td colspan=1 rowspan=1 > German Conservative Party </td><td colspan=1 rowspan=1 > 948,500 </td><td colspan=1 rowspan=1 > 10.0 </td><td colspan=1 rowspan=1 > 54 </td><td colspan=1 rowspan=1 > −2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Free-minded People's Party </td><td colspan=1 rowspan=1 > 538,200 </td><td colspan=1 rowspan=1 > 5.7 </td><td colspan=1 rowspan=1 > 21 </td><td colspan=1 rowspan=1 > −8 </td></tr>
<tr> <td colspan=1 rowspan=1 > Polish Party </td><td colspan=1 rowspan=1 > 347,800 </td><td colspan=1 rowspan=1 > 3.7 </td><td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=1 > +2 </td></tr>
<tr> <td colspan=1 rowspan=1 > German Reich Party </td><td colspan=1 rowspan=1 > 333,400 </td><td colspan=1 rowspan=1 > 3.5 </td><td colspan=1 rowspan=1 > 21 </td><td colspan=1 rowspan=1 > −2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Anti-Semites </td><td colspan=1 rowspan=1 > 244,500 </td><td colspan=1 rowspan=1 > 2.6 </td><td colspan=1 rowspan=1 > 11 </td><td colspan=1 rowspan=1 > −2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Free-minded Union </td><td colspan=1 rowspan=1 > 243,200 </td><td colspan=1 rowspan=1 > 2.6 </td><td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > −3 </td></tr>
<tr> <td colspan=1 rowspan=1 > German Agrarian League </td><td colspan=1 rowspan=1 > 118,800 </td><td colspan=1 rowspan=1 > 1.3 </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > −2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bavarian Peasants' League </td><td colspan=1 rowspan=1 > 111,400 </td><td colspan=1 rowspan=1 > 1.2 </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > −1 </td></tr>
<tr> <td colspan=1 rowspan=1 > Alsace-Lorraine Party </td><td colspan=1 rowspan=1 > 101,900 </td><td colspan=1 rowspan=1 > 1.1 </td><td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > −1 </td></tr>
<tr> <td colspan=1 rowspan=1 > German-Hanoverian Party </td><td colspan=1 rowspan=1 > 94,300 </td><td colspan=1 rowspan=1 > 1.0 </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > −3 </td></tr>
<tr> <td colspan=1 rowspan=1 > German People's Party </td><td colspan=1 rowspan=1 > 91,200 </td><td colspan=1 rowspan=1 > 1.0 </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > −2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Danish Party </td><td colspan=1 rowspan=1 > 15,000 </td><td colspan=1 rowspan=1 > 0.2 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <td colspan=1 rowspan=1 > Others </td><td colspan=1 rowspan=1 > 97,500 </td><td colspan=1 rowspan=1 > 1.0 </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > −4 </td></tr>
<tr> <td colspan=1 rowspan=1 > Invalid/blank votes </td><td colspan=1 rowspan=1 > 44,800 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td colspan=1 rowspan=1 > Total </td><td colspan=1 rowspan=1 > 9,533,800 </td><td colspan=1 rowspan=1 > 100 </td><td class="highlighted"  colspan=1 rowspan=1 > 397 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <td colspan=1 rowspan=1 > Registered voters/turnout </td><td colspan=1 rowspan=1 > 12,531,200 </td><td colspan=1 rowspan=1 > 76.1 </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td colspan=5 rowspan=1 > Source: Nohlen & Stöver, DGDB </td></tr>
</table>
Question:
Which two parties won the most seats in the 1903 German Federal Election?
Answer:
The Centre Party won 100 of the 397 seats, and the Social Democratic Party (SPD) won 81.