...It pits... unapologetic progressive firebrand against a centrist... for now—the uber-liberal is running away with it. With a month to the... primary, Mr. Fetterman claims a significant fundraising advantage over Mr. Lamb and a substantial lead in the polls... The Lamb formula is a savvy combination of support for key party priorities and independence on issues that resonate with centrist Pennsylvanians. He’s pro-choice, favors Build Back Better and a federal voting takeover, and has even called for getting rid of the filibuster. At the same time, he’s in favor of fracking... has voted for more border security, and... voted for...