Now, with GOP anger still simmering, Specter is under pressure to buck the party again and support "card check" legislation. That bill would make it easier for workers to form unions.
It's only the latest tight spot for the 79-year-old Pennsylvanian. Specter is a political moderate and maverick who is stretched between the wishes of an increasingly conservative party in an increasingly liberal state.
Specter says he is in meetings every day about the card check bill. But he's not revealing to anybody which way he is leaning.
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