The latest Rasmussen Reports telephone survey in Pennsylvania shows Clinton leading Barack Obama by just five percentage points, 47% to 42%. For Clinton, that five-point edge is down from a ten-point lead a week ago, a thirteen-point lead in mid-March and a fifteen-point advantage in early March.
Support for Clinton slipped from 52% early in March, to 51% in mid-month, 49% a week ago, and 47% today. During that same time frame, support for Obama has increased from 37% to 42%.
Obama recently received a key endorsement from Pennsylvania Senator Bob Casey and has also spent more on television ads than Clinton. If Obama is able to pull off an upset in the Keystone State, it would effectively end the race for the Democratic Presidential Nomination. Obama currently leads Clinton nationally in the Rasmussen Reports daily Presidential Tracking Poll. However, while an Obama victory could end the nomination battle, Clinton remains ahead in the state and recently demonstrated her ability to finish strong in the Ohio and Texas Primaries.