Boston–(ENEWSPF)–February 9, 2012. One of the largest grassroots labor organizations in Massachusetts, the Service Employees International Union (SEIU), today announced its endorsement of Elizabeth Warren for U.S. Senate. Representing more than 75,000 healthcare workers, social workers, security officers, janitors and others across the Bay State, SEIU is committing to helping Warren win her election with a mandate to create and advance policies that help the 99 percent.






