YOU SAID:
vote if you're supposed to be studying
INTO JAPANESE
勉強することになっているなら投票してください
BACK INTO ENGLISH
Vote if you are going to study
INTO JAPANESE
勉強するなら投票してください
BACK INTO ENGLISH
Vote if you want to study
INTO JAPANESE
勉強したい場合は投票してください
BACK INTO ENGLISH
Vote if you want to study
That didn't even make that much sense in English.