Yesterday, after the Michigan legislature passed into law that their presidential primary would be Jan. 15, Governor Jennifer Granholm wrote a letter asking every candidate to pledge to compete.
A day later the four states that the Democratic National Committee selected to hold early contests put out a pledge of their own asking Democratic candidates to only compete in those states before Feb. 5 when party rules allow for other states to get involved.
The letter reads in part:
"For the good of our party and our candidates, it is our desire to bring finality, predictability and common sense to the nominating calendar. We ask you to accept the attached four state pledge, steeped in established DNC rules, by signing and sending the pledge form by Thursday, September 6, 2007.
Within hours Joe Biden's presidential campaign said that would sign the pledge.