Is "who is in charge of counting votes?" A direct object, subject, object of a preposition, or a predicate noun?

"Who is in charge of counting votes?" is a complete sentence including a subject and two objects of prepositions.

The phrase "who is in charge of counting votes?" serves as the subject of the sentence. To determine this, let's break down the sentence:

"Who" is a pronoun that acts as the subject of the verb "is in charge of counting votes." The verb "is" indicates a state of being, and "in charge of counting votes" is a prepositional phrase that functions as the predicate. Therefore, "who is in charge of counting votes?" acts as the subject of the sentence.