Can Trump swing Pennsylvania in the general election?

[°Leprechaun]

No way. You heard it here first.

[°Leprechaun]

No Republican can win against either Democrat in Pennsylvania. The Republican candidate whether it's Trump or anyone else should focus on the top four swing states Colorado, Florida, Ohio and Virginia. They may need all four. The only other possible swing state is Iowa.
(Nevada, New Hampshire, New Mexico and Wisconsin clearly lean Dem.)
It will be interesting to watch which swing states become the best bellweathers in the next 20 years more or less. The Republican will try to win Pennsylvania, but the more money spent here the less spent in critical states like Ohio and Florida.

[°Leprechaun]

The math is clear. All he needs are Romney states (all sure thing), Florida, Ohio and Pennsylvania. Therefore, Pennsylvania is key for TRUMP's overall election success.

He is not going to win Pennsylvania, but your math is correct, the following map gives him 273 electoral votes:

[°Leprechaun]

This is a more plausible map of Trump v either Dem. He would also probably lose Colorado.

[°Leprechaun]

Although it is unlikely I could see Trump narrowly winning the popular vote and losing the electoral college if it's a close election. I think that currently, and ironically, Democrats have a slight advantage in the electoral college. I could see, for example, Trump doing really well in many safe Republican states and narrowly losing certain swing states.