Calling your local lawmaker to express your opinion is generally seen as more effective than sending emails. But legislators have been experiencing such a high volume of calls from constituents recently that their voice mail inboxes have been filled to capacity.

High on the agendas of callers: President Trump’s cabinet nominations and the flurry of actions taken in his first week in office.

J.P. Freire, a spokesman for Senator Orrin Hatch, Republican of Utah, said on Friday that the office had doubled its voice mail capacity in the past few months when it became clear that, with the new administration, “we were going to play an even larger role.”

“Certainly we have a high call volume,” Mr. Freire said. While he declined to comment on the topics discussed with constituents, he attributed some of the high volumes to Senator Hatch’s position on several congressional committees.