The General Executive Board of the International Brotherhood of Teamsters on Wednesday elected not to endorse any candidate for U.S. President. After reviewing six months of nationwide member polling and wrapping up nearly a year of rank-and-file roundtable interviews with all major candidates for the presidency,

The powerful labor union is deeply connected to working class voters in the Midwest and other battleground states that could be crucial to the outcome of November's election.

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.