One of America’s biggest labor unions has defied the will of its pro-Trump membership and declined to endorse a presidential candidate — for the first time in nearly 30 years.

     The International Brotherhood of Teamsters President Sean O’Brien described 2024 as the union’s “most inclusive, democratic, and transparent Presidential endorsement process in the history of our 121-year-old organization.” A  major loss for Harris.

     “Our final decision around a possible Presidential endorsement will not be made lightly, but you can be sure it will be driven directly by our diverse membership,” he said.  That was about an hour before he announced the Teamsters would endorse neither Donald Trump nor Kamala Harris — and at the same time the union revealed its 1.3 million members overwhelmingly support the former president.  An electronic poll found Trump led Harris 59.6% to 34% among numbers; a phone poll had Trump 58% to Harris’ 31%. 

     Those numbers are a big turnaround from when Harris’ boss led the ticket: Before President Biden withdrew, he had 44.3% to Trump’s 36.3%. The union endorsed Democrats in the last two elections: Hillary Clinton in 2016 and Biden in 2020. The liberal Mother Jones magazine called this year’s non-endorsement “a win for Trump.” Trump, in New York for a Wednesday rally on Long Island, said the non-endorsement is “a great honor.” “They’re not going to endorse the Democrats,” Trump told The Post. “That’s a big thing.” One Teamsters member, Christina Rohrer, said it’s time for the union to break with the past.

     “Well Sean, I think you need to endorse a Republican for once,” she posted on Facebook. “You spoke strong words at the RNC just do it already.” The Teamsters did not respond to The Post’s request for comment. “Unfortunately, neither major candidate was able to make serious commitments to our union to ensure the interests of working people are always put before Big Business,” O’Brien said Wednesday. “We sought commitments from both Trump and Harris not to interfere in critical union campaigns or core Teamsters industries — and to honor our members’ right to strike — but were unable to secure those pledges.”