A tweet was posted, ridiculed, and taken down.
National Nurses United, a union backing Bernie Sanders, has a super PAC. It uses that super PAC to help Sanders — though he doesn't raise money for the super PAC, doesn't coordinate with it, and has said he doesn't want its help.
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Representatives of the NNU are at many of his campaign stops and Sanders welcomes them, though.
After Sanders's huge win in New Hampshire, the NNU headed to South Carolina to help stump for Sanders there.
Wednesday evening, the NNU posted this tweet from its tour of South Carolina.
