I can't imagine how weak the Democratic field must be in order for Coakley to be the frontrunner. This seems really crazy.
Coakley is well-respected, if not beloved,
as Attorney General. The Massachusetts understanding of Massachusetts politics views the position of Governor as more closely akin conceptually to that of Attorney General than to that of Senator.
Having said that, if Coakley wins the primary and then chokes in the general again then the Massachusetts Democratic Party will have nobody to blame but themselves for ignoring Kayyem completely.