This is plainly shocking and a lose-lose for one of the most powerful unions in the country. As the only union out of the nation’s 10 largest unions not to endorse Harris, the Teamsters made the mistake of taking the Democrats for granted.

For the first time in nearly three decades, the International Brotherhood of Teamsters won’t endorse a candidate in the presidential race — a blow to the Democratic Party, which has reliably received the union’s approval for years.