To replace Van Hollen in the 8th Congressional District the choices matter on both sides of the aisle. Here's why: There are three top contenders on the Democratic ballot for this seat, and they have made this the most expensive House of Representatives race in the nation. Of these three, the candidate with the longest resume of public service is state Sen. Jamie Raskin. Another big-spender who would be a worthy choice is Kathleen Mathews, a Washington insider. The third big-spender is a public service novice. But he is the one who is spending like a sailor on shore leave. His name is David Trone, and he has no apparent record of public or community service other than contributing money to campaigns in times past.