Don’t call it the One Big Beautiful Bill.

Three top officials from President Trump’s 2024 campaign urged Republican lawmakers on Tuesday morning to move away from the president’s chosen moniker for his signature domestic policy legislation and instead rebrand it as a boost for ordinary Americans.

In a closed-door briefing called to discuss midterm congressional campaign strategy, the officials encouraged lawmakers to refer to the measure as the “Working Families Tax Cut Bill” or the “Working Families Tax Plan,” according to members who attended.

The attempt to relabel Mr. Trump’s top legislative achievement was an implicit acknowledgment that the law is deeply unpopular, with its sweeping cuts to Medicaid and social safety net programs, as well as changes to the Affordable Care Act. Those polices are now threatening Republicans’ chances of maintaining control of the House. More than 64 percent of voters view the legislation unfavorably, according to recent polling.

In the briefing, which was entitled “Love at First Vote,” the Trump campaign officials conceded that the package was not polling well. But they dismissed that as a branding problem rather than an issue with the actual policies that Mr. Trump signed into law two months ago.

“The idea is to focus on the fact that it is a working families’ tax plan,” Representative Nicole Malliotakis, Republican of New York, said as she left the morning meeting held at a private Republican club across the street from the Capitol. “Once people find out what’s actually in it, they’ll be very supportive.”

Ms. Malliotakis said the presentation included polling that showed voters opposed the measure because “they’ve been so misinformed by Democrats’ fearmongering.”