 <translate> This is the relevant information: The enduring popularity of the Christmas song "Rudolph the Red-Nosed Reindeer" has led to Rudolph often joining the list, bringing the number of Santa Claus's reindeer up to nine.
Therefore, the answer is nine. <yor> Ìsọfúnni tó ṣe kókó nìyí: Bí orin Kérésìmesì tí wọ́n ń pè ní "Rudolph the Red-Nosed Reindeer" ṣe gbajúmọ̀ tó ti mú kí Rudolph máa dara pọ̀ mọ́ wọn, èyí sì mú kí iye àwọn àgbò Santa Claus tó wà báyìí jẹ́ mẹ́sàn-án. Nítorí náà, ìdáhùn náà ni mẹ́sàn-án. 