Senate chiefs of staff this week are soliciting K Street for their annual spring fundraiser for the Democratic Senatorial Campaign Committee. Only problem is: Some of the chiefs aren’t making the ask themselves — a move that has discouraged many lobbyists from giving.

Several lobbyists questioned, privately, whether the event — similar to ones hosted by other chiefs of staff from both parties and chambers — would be a successful moneymaker since professional fundraisers have been making the pitch for cash.

“For the first time, they have the fundraiser do the calls and emails. As a donor, I find it offensive,” said one Democratic lobbyist. “None of us who are donors have any reason to respond to a contract fundraiser.”

The whole point behind the event is to get lobbyists to give to the DSCC at the request of their top staff-level contacts. The event, scheduled for April 13 at the Mott House, allows K Streeters a chance for face-time with the chiefs, and sometimes the Senators themselves.

A second Democratic lobbyist said the event was losing some of its buzz downtown.