Part of a memo from Obama campaign manager David Plouffe to reporters:
Now that Mississippi is behind us, we move on to the next ten contests. The Clinton Campaign would like to focus your attention only on Pennsylvania — a state in which they have already declared that they are "unbeatable." But Pennsylvania is only one of 10 remaining contests, each important in terms of allocating delegates and ultimately deciding who are nominee will be. Senator Obama campaigned in Pennsylvania yesterday and will do so again later this week, but he will also campaign aggressively in the other upcoming states — he will travel to other upcoming states in the very near future.
Got it, Keystoners? You're not the whole show!