After educating himself on the ideas and policies of both congressional candidates, Andrew has decided he prefers one candidate over the other. What is the best way Andrew can help his favored candidate get elected?
A.
He can remember to vote on election day.
B.
He can watch the local news every evening.
C.
He can educate himself on local public policies.
D.
He can write a letter to the candidate to show his support.
E.
He can volunteer to work on the campaign.