If two names are used together so often that they are treated as one element, the following verb is singular. Only 15 percent of the building was damaged in the fire. (The building is a unique name and 15% of them are singularly and must adopt a singular verb.) The teacher and the student`s father argue about it. The owner and occupant of the red brick house were cellmates. Five kilos of flour is enough to bake the cakes. No: the owner and manager of the store are very friendly. If two names refer to the same person, the article `the` is used only once and the verb is in the singular. If two names refer to two different people, the article `the` is repeated and the verb is plural. . (Man is a plural noun and 54% of people must therefore take a plural verb.) If two names refer to the same person or the same thing, the verb is in the singular form. . The patient`s nurse and sister take care of him. (The nanny and sister are the same person as not who is used again, so the singular verb is used..) An amount, no matter how much it is, and measures of weight and distance are followed by a singular verb.
According to the poll, 54% of people will vote for him.