Clinton picks up fourth labor endorsement

Hillary Clinton snagged her fourth union endorsement when the National Association of Letter Carriers announced today that it will support her presidential bid.

But the endorsement she and her Democratic rivals are pointing towards will come next week, when the powerful, 1.9-million-member Service Employees International Union could announce its pick.

The letter carriers union claims 300,000 active and retired members. In a statement issued by the Clinton campaign, union President William H. Young said that Clinton was the runaway winner of a survey of union members and that she won support for being the first candidate to back legislation banning the contracting out of carrier jobs to low-wage private firms.

"There is nobody better prepared to take up the battle for universal health insurance, and there is no one I would trust more than Senator Clinton to strengthen Social Security in order to keep the promises we have made as a nation to our retirees, our disabled workers and to their survivors," Young said in the statement.

Clinton said, "These hardworking men and women are part of the fabric of every community in America, and they deserve an advocate in the White House."

She also has the support of the United Transportation Union, the International Association of Machinists and Aerospace Workers, and the Transportation Communication Union.