SEIU endorsed Obama Feb. 15 and has worked to bolster support for him in the Democratic race. According to SEIU, its members have gone door to door and made phone calls for Obama, and SEIU has aired pro-Obama ads on television (see the union's Indiana ad here). SEIU claims 1.95 million members nationwide.
SEIU: Obama Is Clearly Presumptive Nominee
Following his win last night in North Carolina, the Service Employees International Union (SEIU) claimed today that Barack ObamaBarack ObamaDems discuss dropping Wasserman Schultz Mellman: Parsing the polls LA mayor: 'Donald Trump will not win California' MORE is the Democratic Party's presumptive presidential nominee.