Turnout is going to vary widely across Massachusetts on Tuesday, Nov. 7, but Boston is likely to see just 90,000 people cast ballots, according to Bill Galvin, the state's elections chief.

Galvin stressed that he was guessing and said turnout numbers can be hard to project.

In 2013, when an open mayoral seat generated intense voter interest, there were hundreds of thousands of people eligible but 142,000 turned out, Galvin noted.

Four years later, Boston Mayor Marty Walsh is running for a second four-year term and facing a challenge from City Councilor Tito Jackson.

This year, the intensity isn't as great, and the amount of money getting spent is lower, according to Galvin.

There are also three open City Council seats in Boston: District 1 (East Boston, Charlestown and the North End); District 2 (South Boston, Chinatown, downtown Boston and the South End); and District 7 (Roxbury, Fenway and part of the South End).

Galvin said he expects "brisk" turnout in Lawrence, where Mayor Dan Rivera is in a rematch with the controversial man he ousted, William "Willie" Lantigua.

Galvin said state elections officials paid a visit to Lawrence last week, meeting with local officials and campaign representatives in order to prep for Election Day.

Voters will also go to the polls in Agawam, Attleboro, Beverly, Brockton, Chicopee, Fall River, Gloucester, Lynn, Lowell, New Bedford, Northampton, Peabody, Pittsfield, Quincy, Springfield and Worcester, among other cities and towns.