On May 3, the idol singer posted a photo on her Instagram page looking formal in a pure white dress with the words "Let us all, please vote."

The full caption read, "Hello this is Seohyun.  The 19th Presidential Election is right around the corner.  Polls officially open tomorrow (election on May 9) so please let us all vote for the sake of Korea's future!"

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?????~?????^^ ?19? ??????? ???? ?????! ???? ????? ???? ????? ??? ?? ???? ?!!?????!^^? *????? - 5?4?(?) ??6:00~??6:00 5?5?(?) ??6:00~??6:00 *??? - 5?9?(?) ??6:00~??8:00

A post shared by seo ju hyun(seo hyun) (@seojuhyun_s) on May 3, 2017 at 5:42am PDT