Final answer:
Constituency service is the practice of providing assistance to constituents, helping them navigate bureaucratic processes and access federal programs. It is an important aspect of building credibility and gaining support from voters.
Step-by-step explanation:
Constituency service is the practice of members of Congress providing assistance and support to their constituents. It involves helping citizens navigate bureaucratic processes and access federal programs.
Constituency service has become increasingly important for politicians because it helps them build credibility and gain support from voters in their districts.