A Judas goat is a trained goat used at a slaughterhouse and in general animal herding. The Judas goat is trained to associate with sheep or cattle, leading them to a specific destination. In stockyards, a Judas goat will lead sheep to slaughter, while its own life is spared. Judas goats are also used to lead other animals to specific pens and on to trucks.[1]

Apparently Stupak said he intended to vote "yes" all along. It is very possible this was a Democratic trick to divert attention away from the real health bill. This bill impacts every aspect of our lives. It gives perks and grants to disadvantaged and union leaders. It involves the IRS in being able to take penalties, payments, and taxes right out of our bank accounts. , Yes, that's right. The government will want access to our bank accounts.
Stupak was a Judas goat.