The International Brotherhood of Teamsters has opted not to endorse any presidential candidate for the first time since 1988, despite strong internal polling showing nearly 60% of its members favor former President Donald Trump over Kamala Harris, who garnered only 34%. Teamsters President Sean O'Brien stated that the decision was influenced by both candidates' inability to make critical commitments to the union regarding worker rights and support for union interests. This non-endorsement reflects a significant shift in the union's political stance, as it has historically leaned toward the Democratic Party. The Teamsters' decision to abstain from endorsement is seen as a potential victory for Trump, who has made efforts to align himself with union leaders. This situation highlights an internal conflict within the union, as many members, including lifelong Democrats, are rejecting the party's current leadership. O'Brien emphasized the importance of members' voices in the union's decisions, stating, 'Our members are the union.'