Casey (D)- 49%
Smith (R)- 33%
Casey has a 39/38 approval rating; mostly because only 56% of Democrats approve of him, but they still vote for him anyway. He's also getting 22% of Republicans against Smith.
Smith's name recognition is up to 45%.
On a more interesting note:"Democrats are starting out with an advantage in the race for Attorney General. Kathleen Kane leads Republican opponent David Freed 42-33. The contests for Auditor General and Treasurer produce the exact same result with the Democrat ahead 35-34 in each of them and a lot of voters still undecided."