Specter to deliver key vote against unions

In a blow to the labor movement's chief congressional priority, Sen. Arlen Specter said he will vote to block a measure designed to make it easier for unions to organize workplaces.

His decision, announced in a speech on the Senate floor, appears likely to leave its Democratic sponsors one vote short of the margin needed to cut off debate on a bill that has prompted a fierce lobbying tug-of-war.

Mr. Specter closed his statement offering the hope that his decision "should end the rumor mill that I have made some deal for my political advantage."

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