The Teamsters broke with the union tradition of backing Democrats on Wednesday. Here's a look at how it is different from other major unions.

(WASHINGTON) — 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.

Union says neither Kamala Harris nor Donald Trump had satisfied its conditions for a formal endorsement. Several state and local Teamsters groups have stepped forward to back Democratic nominee Harris.