From Wiktionary, the free dictionary
Wahl (“election”) + Urne (“urn”)
Wahlurne f (genitive Wahlurne, plural Wahlurnen)
- ballot box
Declension of Wahlurne [feminine]
- “Wahlurne” in Duden online
- “Wahlurne”, in Digitales Wörterbuch der deutschen Sprache[1] (in German)