Republican vice-presidential nominee JD Vance faced a mixed reception, including boos, during his speech at the International Association of Fire Fighters (IAFF) convention in Boston. Vance attempted to promote the Republican ticket as pro-worker, despite the traditionally anti-union stance of his party. He shared personal anecdotes, including how firefighters had helped his mother, to connect with the audience. The reception contrasted sharply with the warm welcome received by Democratic vice-presidential nominee Tim Walz, who had spoken the previous day. Vance urged the union to consider supporting the Republican ticket, despite their historical support for Democratic candidates. The IAFF, representing nearly 350,000 members, has not yet announced an endorsement for the upcoming election.