LEFT IN THE WEST. The Hill discusses recent changes that have improved Democrats' '08 Senate prospects a bit. Several of them are happening in the West, where, as we've been hearing for a while, Democrats have been resurgent and well-placed to capitalize on opportunities as they arise. To be momentarily callous here, the death of Republican Senator Craig Thomas in Wyoming opens up a seat Republicans will have to defend next year; though the state's governor is Democratic, that obviously remains a deeply red state and would be a tough prospect.