The Globe's Metro section has a rundown on the District 3 race, with John O'Toole, Craig Galvin and Frank Baker viewed as the frontrunners.

All three top-tier candidates have benefited from significant fund-raising, influential endorsements, and the support of labor unions and civic groups. They have also endured greater scrutiny: Baker pleaded guilty almost 20 years ago to possession of marijuana; O’Toole signed a 2005 petition against same-sex marriage and has repeatedly fallen behind on his city property taxes and owes $1,500 from 2010; and Galvin is in the midst of a foreclosure.

The Globe also looks at the races in District 2 and District 7.