With Democratic State Treasurer Robert P. Casey Jr. on the verge of announcing he will run for the U.S. Senate next year, fellow Democrat and former Treasurer Barbara Hafer surprised his camp Wednesday by beating him to the punch and entering the race. "We're in it," Mrs. Hafer, 61, of Allegheny County, told The Associated Press. "I'm getting a campaign up and running." Earlier in the day, two sources close to Mr. Casey told The Tribune he was close to announcing a run for the Democratic Senate nomination and a fall contest against U.S. Sen. Rick Santorum, the presumptive Republican...