I really do not know how this will play out:
Pennsylvania Sen. Bob Casey plans to endorse Sen. Barack Obama for president today in Pittsburgh, sending a message both to the state’s primary voters and to undecided superdelegates who might decide the close race for the Democratic presidential nomination.
Dan Pfeiffer, deputy communications director for the Obama campaign, confirmed that Casey would announce his support during a rally at the Soldiers and Sailors Military Museum and Memorial and that he would then set out with the Illinois senator on part of a six-day bus trip across the state.
The endorsement comes as something of a surprise. Casey, a deliberative and cautious politician, had been adamant about remaining neutral until after the April 22 primary. He had said he wanted to help unify the party after the intensifying fight between Obama and Sen. Hillary Rodham Clinton.
The name Casey in PA is like the name Kennedy in Massachusetts, and I suspect the outcome will be the same. Obama is going to lose PA, most likely, and this is more of a signal to super-delegates than anything else.
See also the Dodd.