The CD&V (Christian Democratic and Flemish), one of the main political parties in Belgium, is now using Drupal for their official website.
CD&V using Drupal
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To stay in this flemish political atmosphere:
Jong Spirit (Young Spirit), the youth movement of the Flemish Left- or Social-Liberals, also uses Drupal for their official website.
On http://drupal.be/node/461 you'll find a (growing) collection of Belgian political sites using Drupal. Let the elections begin!
Animo StuGent, the young socialists (sp.a) at Ghent University, also use Drupal for their website.