Groton — Polls will open at 6 a.m. Monday for the biennial municipal election in Groton City, where voters will elect a mayor, six city councilors and the city clerk.

Deputy City Mayor Keith Hedrick, a Democrat, is running for mayor against Town Councilor Harry Watson, a Republican.

In the council race, Democratic incumbents Lawrence Gerrish, Conrad F. Heede, Stephen Sheffield and Jill Rusk are seeking re-election. Newcomers Rashaad Carter, a state trooper, and Jamal Beckford, an engineer at Electric Boat are also running on the Democratic side.

Among Republicans, Town Councilor Gregory W. Grim is seeking a seat along with Christopher M. Calkins Jr., who works for a virtual assistance business; Emily H. Maher, a Representative Town Meeting member and Joshua J. Trask, a technician at Electric Boat.

City Clerk Deb Patrick, a Democrat, is seeking re-election and is unopposed.

Polling places at the Groton Municipal Building and West Side Middle School will be open until 8 p.m.