Clinton holds a seventeen point margin over Bernie Sanders, exactly half of her lead from October.
On the GOP side, Trump has only gained a point but the lineup below him has drastically changed with Ben Carson plummeting and Ted Cruz being the chief beneficiary.
Interestingly, more Republicans are unsure of their choice now (26%) than in October (20%).
This poll was conducted by the Center for Opinion Research at Franklin & Marshall College. They surveyed 361 registered Democratic Pennsylvania voters and 276 registered Republican Pennsylvania voters from January 18th to January 23rd. The margin of error is +/- 3.6%.