The Teamsters president, Sean O’Brien, has shown an openness to former President Donald J. Trump, dividing the powerful union. Neither candidate will be the beneficiary of its considerable organizing muscle.

The Teamsters union's executive board said Wednesday the union will not endorse any presidential candidate despite polling that showed a majority of members backed Republican Donald Trump over Democrat Kamala Harris.

Start the day smarter. Get all the news you need in your inbox each morning. It marks the first time the Teamsters has skipped an endorsement in a presidential election since 1996, having supported the Democratic nominee in each election that followed.

The “Uncommitted” movement, which sprung up during the Democratic primaries in opposition to the Biden administration’s policy on the war in Gaza, said Thursday it would not endorse Vice President Kamala Harris after her campaign again spurned activists pushing for a halt to US military aid to Israel and an immediate ceasefire.

The International Brotherhood of Teamsters declined Wednesday to endorse Kamala Harris or Donald Trump for president, saying neither candidate had sufficient support from the 1.3 million–member union.

Former President Donald Trump said he was honored after The International Brotherhood of Teamsters decided not to endorse either candidate in the 2024 presidential election. CBS News campaign reporter Taurean Small has more.

Leaders of the movement also said they're discouraging votes for third-party candidates that could "inadvertently" deliver the presidency for Trump.