The International Brotherhood of Teamsters has not endorsed any candidate in the 2024 presidential election. Teamsters President Sean O’Brien stated that neither candidate made commitments on union concerns, including honoring the right to strike. Polling showed no majority support for Harris, with Trump preferred by a significant margin among union members. The decision marks a break from the union's tradition of endorsing Democrats, although Harris gained support from some local unions. The Teamsters represent over 1 million members.