Former Gov. Charlie Baker joined former Gov. Deval Patrick in supporting Question 3 on Monday, Oct. 5, backing a proposal to replace Massachusetts’ separate party primaries with a single contest open to all candidates and voters.

The Yes on 3 campaign announced Baker’s endorsement, adding the Republican former governor to a coalition that already included Patrick, a Democrat. The two competed for governor in 2010.

Milton and Canton voters will decide the statewide question in the Nov. 3 election.

Under the official ballot summary, candidates would appear together on one primary ballot, regardless of party. The two receiving the most votes would advance to the general election, even if both belonged to the same party.

The proposal would cover state, congressional and county races, including governor, the Legislature, district attorney and sheriff. Presidential and municipal elections would remain outside the system. The change would take effect Jan. 1, 2028.

Support crosses party lines

Baker said the proposal would encourage candidates to seek support beyond their own parties. Patrick said elections should reward candidates’ ideas, experience and character.

CommonWealth Beacon reported that former lieutenant governors Tim Murray and Kerry Healey, Auditor Diana DiZoglio and former U.S. Rep. Joe Kennedy III also support the measure.

Both the Massachusetts Democratic Party and Massachusetts Republican Party oppose it. Critics argue that larger primary fields and more expensive campaigns could give wealthy candidates and donors greater influence. They also warn that a top-two system could leave a party without a candidate in November.

Supporters argue that the change would broaden ballot access and increase competition. It would eliminate the convention threshold that currently requires statewide party candidates to receive at least 15% of delegates’ votes to qualify for a party primary.

Voters remain divided

A MassINC Polling Group survey for CommonWealth Beacon found 43% support, 36% opposition and 20% undecided. The online survey included 800 likely voters and was conducted Sept. 14–22, with a credibility interval of plus or minus four percentage points.

WBUR reported that a Tufts University analysis found limited evidence that similar systems in California and Washington may modestly reduce polarization and slightly increase primary turnout. They may also draw more campaign money.

Voting in Milton

According to Milton’s election notice, early voting will take place on scheduled dates from Oct. 17–30 in the Blute Conference Room at Town Offices, 525 Canton Ave. Hours vary, and no Sunday sessions are listed.

The registration deadline is Oct. 24. Applications for mail ballots must be received by 5 p.m. Oct. 27. Election Day polls will be open from 7 a.m. to 8 p.m.