YOU SAID:
Vote if you are your mom's mom
INTO JAPANESE
あなたがあなたのお母さんのお母さんであれば投票する
BACK INTO ENGLISH
Vote if you are your mother
INTO JAPANESE
あなたがあなたの母親であれば投票する
BACK INTO ENGLISH
Vote if you are your mother
That didn't even make that much sense in English.