Harris Ad to Showcase Support of Liz Cheney and Other Republicans

Vice President Kamala Harris’s campaign will air a new ad in battleground states featuring endorsements from a retired general, former members of the Trump administration and former Representative Liz Cheney.

The ad, “Fit to Lead,” was shared by the campaign with The New York Times. It comes as Ms. Harris, locked in a close race with former President Donald J. Trump, the Republican nominee, has been seeking to give Republicans and conservative Democrats who dislike Mr. Trump but are wary of her a permission structure to support her.

With four-and-a-half weeks until Election Day, the ad also lands at a time when more voters are tuning in and paying attention. Ms. Harris’s allies have been highlighting the former president’s history of erratic behavior and the condemnation of people who worked with him.

Some aspects of the spot seem intended as much to win voters as to aggravate Mr. Trump: for instance, it begins with footage of David Muir, the ABC News anchor who Mr. Trump has complained bitterly about since he moderated Mr. Trump’s debate against Ms. Harris, one that Mr. Trump was widely seen as losing.

The spot is set to begin airing this weekend as part of an existing $370 million fall advertising spending plan by the Harris team across battleground states, although it’s unclear precisely how frequently it will air.

The spot opens with Mr. Muir noting that 100 Republicans who worked in the national security space under several G.O.P. presidents — Ronald Reagan, both Bushes and Mr. Trump himself — have backed Ms. Harris.