what was Vincent Montmeat's support rate
SELECT t2.support_rate FROM people AS t1 JOIN candidate AS t2 ON t1.people_id   =   t2.people_id where t1.name  =  "Vincent Montméat"
Vincent Montmeat's support rate refers to t2.support_rate; support rate is stored in a table named candidate; people's names are stored in a table named people; joining condition is based on people_id.