Boston mayoral candidate Josh Kraft knocked incumbent Mayor Michelle Wu on Sunday for the costs of her high-stakes testimony on Capitol Hill last week, a bill that included up to $650,000 for outside legal counsel.

Michelle Wu holds a double-digit lead over philanthropist Josh Kraft in the race for Boston mayor, a new poll from Emerson College finds. The preliminary election to narrow the field down to two candidates is in September.

As her opponent seeks to capitalize on her perceived housing vulnerabilities, Boston Mayor Michelle Wu announced that the city has invested $10 million in federal funds towards converting 347

The survey offers the first early look at the matchup between the first-term progressive mayor and her most prominent challenger.

As Boston Mayor Michelle Wu departed Capitol Hill on Wednesday, her challenger in this year’s mayoral race, Josh Kraft, said he supported the immigration policy that Wu had defended to congressional Republicans.

Boston Mayor Michelle Wu says she will make a “major housing announcement” Monday morning in Mattapan. She is scheduled to speak at 10 a.m. at the Fairlawn Estates apartment complex. Wu will join residents of the Fairlawn Estates,