I wouldn’t worry about Toomey too much. Statewide, Republicans perform better than REPUBLICAN PRESIDENTIAL CONTENDERS. I am a resident of Pennsylvania and Pennsylvanians love being ticket splitters. In 2004, Bush lost Philly 412K but Corbett definitely outperformed him as did Santorum over Bush in 2000.
Not to mention, turnout for those races outside of presidential choices is lower. Corbett won by 7 in 2008 for Attorney General re-election at the same time Obama was winning the state by 10!