Dave McCormick took the oath Friday as Pennsylvania’s junior senator, bringing a new voice to Capitol Hill and giving Republicans a Senate seat in the state after two years of sole control by Democrats.

David McCormick, whose parents hailed from Plumville and Punxsutawney, was sworn in as one of 53 Republican senators in the 119th Congress.

WASHINGTON, D.C. — With his hand resting on a cherished family Bible, Senator Dave McCormick was sworn into the 119th Congress on Friday in a packed chamber that blended tradition and

It’s early, and Mr. McCormick, a Republican Senate challenger, is behind incumbent Senator Casey at this moment, but there appears little panic. In fact, they are smiling. So are Mr. McCormick’s top campaign advisers,