I have no idea where the bar should be and I'm not familiar with Michigan voting.

But I'm guessing that anyone thinking about voting in the primary and favoring a candidate other than Sen. Clinton, knows they should vote uncommitted.   And based on the organizational abilities of the Obama campaign and the devotion of Edwards supporters, I would think there is 50% at least uncommitted right there.

So I confess to my ignorance.  I am also happy with the pollster's number because I am an Obama supporter, have the feeling Sen. Clinton will get less than 50% and wouldn't mind if that is perceived for whatever reason as a horrific loss for her campaign.