Casey and Toomey could be a long time duo. Toomey will always have tougher races but Pennsylvania always seems to give both parties a chance. Poll results don't mean anything right now, especially when 1/3 of the electorate has no idea whats going on.
I assume that Pennsylvania goes Democratic by 3-4%, if it goes Democratic. I go off the 2012 results and don't see why these wouldn't hold as a ceiling.
If something is a ceiling, then it should never go above it. Pennsylvania has gone Republican many times before, therefore its not a ceiling.
I meant President. Pennsylvania hasn't gone Republican for President since 1988.