Editor's note: Polls closed in Boston at 8 p.m.

Polls opened across Boston this morning, with voters getting a final opportunity, after early voting and mail-in ballots, to make their mark in state and local primaries.

Maura Healey, who does not face a Democratic primary challenger in the race for governor, will appear in Dorchester at 8 a.m., stopping by the Lower Mills branch of the Boston Public Library system, a polling location. Andrea Campbell, a former city councillor who represented Dorchester and Mattapan and is now vying to succeed Healey as attorney general, is set to join her.

Healey ends her day at IBEW Local 103’s offices on Freeport Street, with a celebration of her primary win. Healey will face a Republican, either businessman Chris Doughty or Donald Trump supporter Geoff Diehl, in the November location.

In many local races, the Sept. 6 outcome will determine who takes office in January, with no Republican challengers on the general election ballot that follows in November.

In the Second Suffolk Senate district, four major candidates are facing off for the Democratic nomination: State Reps. Liz Miranda and Nika Elugardo, Rev. Miniard Culpepper and former state Sen. Dianne Wilkerson.

More available on the Second Suffolk race here.

The Fifth Suffolk House district has Danielson Tavares, a former aide to Mayor Marty Walsh; Boston Planning and Development Agency official Chris Worrell, and perennial candidate Althea Garrison.

More available on the Fifth Suffolk race here.

The most contentious local race on the ballot is for Suffolk County District Attorney. (Suffolk County covers Boston, Chelsea, Revere and Winthrop.)

Hyde Park Councillor Ricardo Arroyo is facing off against interim DA Kevin Hayden, who was appointed to the job after Rachael Rollins left for the US Attorney’s office.

The Arroyo and Hayden camps have been locked in a vicious battle for weeks, with reporting from the Boston Globe throwing the race into disarray.

The Globe reported that Hayden gave a “series of shifting and contradictory explanations for his office’s handling” of an alleged cover-up among Transit Police officers in a roadside dispute in Mattapan. Hayden has said the case remains open and the subject of a grand jury investigation.

Separately, the Globe reported weeks later that Arroyo had been investigated as a teenager after he was accused of sexual assault. Arroyo denied the accusations, and went to court to obtain documents that he said exonerated him and proved no charges were filed. But the same documents showed he apparently lied to the Globe when he told the newspaper that he first heard of the investigations from its reporters.

More available on the race here.

The Suffolk sheriff’s office is also on the ballot. Nine-year incumbent Steve Tompkins facing a challenge from Sandy Zamor Calixte, who has worked in various roles in the sheriff’s department for 16 years.

Aside from the local races, a number of contested statewide positions are on the ballot, including lieutenant governor, auditor, attorney general and secretary of state.

More on the statewide races available here.