Answer:
According to structure, this sentence is a COMPLEX SENTENCE.
According to function, this sentence is a DECLARATIVE SENTENCE.
Explanation:
This is a COMPLEX SENTENCE.
This is because the thought is complete. It has a subject and a predicate (the action or information about the subject). "The students are studying."
With the most votes, he garnered only 40% of the popular vote. It has one dependent clause and one independent clause.
He received around 40% of the vote.
This is a DECLARATIVE SENTENCE.
Statements are declarative. It's punctuated.
When a period finishes a declarative sentence, these criteria are met.