The powerful labor organization that often backs Democrats has declined to endorse either Kamala Harris or Donald Trump in the presidential election. Here’s why that matters – and why it doesn’t.

(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.

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.