The dems are in favor of it, so there must be something wrong with it...they're always wrong.
Actually, I suspect the reason the dems are in favor of a draft is so they can complain that there are nonvolunteers dying in a war not of their choosing. Their claims currently ring pretty hollow because we have an all voluntary military.
If I were a cynical person I'd say the DNC is trying to force the GOP into increasing spending (which they will oppose without a tax increase) or look weak on defense.
That is just one of the reasons. The other is that, with a draft, they would be better able to marshal mass protests against the war.
They remember only too well how "popular" the anti-war movement was in Viet Nam -- until Nixon ended the draft. And, then, people stopped showing up for the riots...
The Democrats want a draft because, not because one is needed, but because it would give them some political leverage.