Three Democratic candidates are now campaigning in Iowa with major labor endorsements. Jesse Russell has a look:

Connecticut Senator Chris Dodd was the first to receive a labor nod coming from the International Association of Firefighters. New York Senator Hillary Clinton has recently picked up the endorsements from both the International Association of Machinists and the United Transportation Union. In a unique move the Machinists also endorsed a Republican candidate – former Arkansas Governor Mike Huckabee. Huckabee was the only Republican candidate who agreed to speak at the Machinists recent convention. And just in time for Labor Day, former North Carolina Senator John Edwards picked up two major union endorsements – from the United Steelworkers and the United Mineworkers of America. Edwards had already received an endorsement from the United Brotherhood of Carpenters.