Congress Daily reports that Sen. Arlen Specter (R-PA) will vote against a cloture motion to limit debate on the Employee Free Choice Act. "Specter's opposition could doom the legislation because to pass the bill organized labor needs 60 votes to overcome a Republican filibuster."
It also likely means Specter has chosen to make his re-election run as a Republican and not as an independent. He had already ruled out switching parties.
Coming tomorrow: A new Quinnipiac in Pennsylvania tests Specter's chances.
Update: Specter's primary challenger Pat Toomey released a statement: "The difference between Specter's vote on the big government stimulus bill and Specter's vote on card check: a threat in the Republican primary. It's nice to see Sen. Specter reverse his position in a positive direction on card check, but I wish it didn't take primary opposition to get him to do it."