Find the distinct first names of the students who have class senator votes.
SELECT DISTINCT T1.Fname FROM STUDENT AS T1 JOIN VOTING_RECORD AS T2 ON T1.StuID  =  T2.CLASS_Senator_VOTE
SELECT DISTINCT T1.Fname FROM STUDENT AS T1 JOIN VOTING_RECORD AS T2 ON T1.StuID  =  T2.CLASS_Senator_VOTE
[{'Fname': 'Eric'}, {'Fname': 'Michael'}]