Obama whistle-stops across Pa.

HARRISBURG, Pa., April 19 (UPI) -- U.S. Sen. Barack Obama, D-Ill., spent Saturday in an old-fashioned whistle-stop trip through southeastern Pennsylvania.

The schedule included five stops along the Main Line through the Philadelphia suburbs and Lancaster County to the state capital, Harrisburg, The New York Times reported. As the train slowly rumbled through other towns, Obama waived to supporters from the rear platform of an old-style rail car hitched to modern Amtrak equipment.

Obama had little new to say as he worked to increase his support before Tuesday's crucial Pennsylvania primary, the newspaper said.

"This is a defining moment in our history," he said in Wynnewood, the first stop. "All of you are here because you can feel it."

Pennsylvania has 188 Democratic delegates up for grabs Tuesday, the largest number of any state still open. Sen. Hillary Clinton, D-N.Y., has consistently led in the state, but a strong showing by Obama could give him a major boost toward capturing the Democratic Party nomination.