Michael
Roger Minogue

In an interview with NBC Boston, Minogue stated he would forgo a salary if elected governor.

GBH reported a University of New Hampshire poll showing Healey leading Minogue 54% to 38%, a 16-point advantage, described as a narrower lead than some other polling.

Minogue and Healey met in their first televised debate hosted by WBZ-TV in Boston. Exchanges covered taxes and spending, the federal scholarship tax credit, the proposed Springfield courthouse, immigration, and Minogue's political ties. Healey repeatedly connected Minogue to President Trump; Minogue argued the race should focus on Massachusetts and criticized Healey's record on affordability.

Minogue proposed a temporary Massachusetts gas-tax holiday and called for a top-to-bottom state budget audit, as well as an audit of the Legislature. The campaign released its own estimate claiming the Healey administration had spent nearly $300 billion.

A super PAC supporting Minogue claimed an internal poll showed the candidates close among people who had seen, read, or heard something about the race—not an independent poll of all likely voters.

WCVB Channel 5, WBUR, and The Boston Globe announced they would host a one-hour final debate between Healey and Minogue before Election Day, scheduled for October 15.

The Minogue campaign released a statewide advertisement titled 'Insiders,' calling for more government oversight and promoting his argument for a state audit.

Minogue criticized Healey and defended his heavy campaign spending, arguing he was independent and not beholden to any party. He also reiterated calls for a state budget audit.

The Boston Globe reported that Minogue spent more than $6.1 million in September, a record monthly amount for a Massachusetts gubernatorial candidate. He raised $1.8 million that month, had $1.5 million remaining, and had put at least $15.8 million of his own money into the campaign over roughly a year.

A MassINC Polling Group/CommonWealth Beacon poll of likely voters found Healey leading 54% to 32%, with 27% of respondents undecided about Minogue and 21% viewing him favorably.

The Cape Cod Times reported the Secretary of State's final tally, confirming Minogue's primary victory with 194,758 votes to Shortsleeve's 62,161.

The Minogue campaign announced that the New England Police Benevolent Association (NEPBA) had endorsed his candidacy for governor.

Minogue publicly called on debate organizers to invite unenrolled candidate Andrea James and stated he would participate in four debates.

The Boston Herald reported on primary winners and losers, with Minogue identified as the Republican nominee for governor.

Minogue presented a governing blueprint organized around accountability, affordability, opportunity, and public safety, including proposals for state-budget and legislative audits, housing and energy policy changes, and a gas-tax holiday.

Minogue defeated Brian Shortsleeve in the Republican primary, receiving 194,758 votes to Shortsleeve's 62,161, advancing to face Gov. Maura Healey in the November 3 general election.