The Town of Lincoln has two precincts, and is represented at the various levels of government by different elected officials including county, state, and federal representatives. If you would like to find out who your representative is you can go to the Massachusetts Legislature Website here
You can look at the following map to see the break down of the two precincts within the Town of Lincoln. Lincoln map
As of 2022 with the new Census and Redistricting done by the Commonwealth of Massachusetts Lincoln is part of the following Districts.
State Representative in the Massachusetts General Court 13th Middlesex (Precinct 1) and 14th Norfolk (Precinct 2)
State Senator Third Middlesex
United States Representative 5th Congressional District