我可以在MySQL触发器的if语句中声明游标吗？

IF ((SELECT COUNT(*) FROM Votes v) <= 3) THEN

      DECLARE VoteCursor CURSOR FOR
      SELECT  v.VoteType
      FROM
      Votes v;

     DECLARE CONTINUE HANDLER
        FOR NOT FOUND SET finished = 1;

      OPEN VoteCursor;

      getVote: LOOP
        FETCH VoteCursor INTO Vote;
        IF finished = 1 THEN
          LEAVE getVote;
        END IF;
          SELECT Vote;
      END LOOP;
      CLOSE VoteCursor;
   END IF;

该代码位于触发器内。当我尝试执行它时，显示DECLARE附近有语法错误，请帮助...