The Wall Street Journal reports key Senate Democrats are wavering in their support of the Employee Free Choice Act, dealing a potential blow to organized labor. The bill would stop employers from demanding secret-ballot elections and require them to recognize unions if a majority of workers consented. The bill has been fiercely opposed by the Chamber of Commerce and other business groups. At least six senators who have previously supported the proposal now say they are opposed or not sure. Senators on the fence include Democratic Senator Mary Landrieu of Louisiana, Republican Senator Arlen Specter of Pennsylvania, and both of the Democratic senators from Arkansas, Mark Pryor and Blanche Lincoln.