Dean has thw second most delegates, somehow.
Dean's second place showing in delegates is mostly due to 'superdelegates' (party leaders and elected officials) who can change their mind. Most of them jumped on the Dean bandwagon before Iowa. In fact Tom Harkin (Iowa Senator who was standing behind Dean as he imploded during the 'I have a Scream' speach in Iowa) is reportedly thinking of pulling his support.
It is highly likely that Edwards will surpass him by Super Tuesday even if his super deleagates dont abandon him by then.