Hillary Clinton is winning by a large margin in seven Philadelphia-area congressional districts. | Getty Poll: Clinton has 4-point lead over Trump in Pennsylvania

A new survey out Wednesday shows Hillary Clinton clinging to a 4-point lead over Donald Trump in vote-rich Pennsylvania.

The Monmouth University poll, conducted Saturday through Tuesday, shows Clinton leading Trump, 48 percent to 44 percent — a result identical to a CNN/ORC International poll released earlier Wednesday.

The Monmouth poll shows a tighter race than last month, when Clinton had a 10-point lead over Trump. Since October, Trump has gained ground in western Pennsylvania, now leading Clinton there, 54 percent to 38 percent. But Clinton is still winning by a large margin in the seven Philadelphia-area congressional districts: 62 percent to 29 percent.

Like in the CNN/ORC International poll, Democrat Katie McGinty is leading incumbent Republican Sen. Pat Toomey. The Monmouth poll shows McGinty ahead 3 points, 47 percent to 44 percent — similar to her 5-point advantage in the CNN/ORC poll.

The Monmouth poll includes 403 likely voters and has a margin of error of plus or minus 4.9 percentage points.