Open question: TAXES question: I live in MD, move I on De-middle year and I work in Pa. ASSISTANCE!!!?

I at present live in Elkton, Maryland and work to the right over the line in Pennsylvania. Up to now taxes were simple, because I do not have to submit a Pa explanation, because the conditions exchange. However I move after Delaware at at the end of of August and I still in Pa will work. How is this, goes working come tax time? Am I going taking a main loss through having 3 condition explanations to submit? GUESS/ADVISE REQUEST!!!