In the beginning, experts gave it a week. Two, tops. Now, a state Supreme Court justice finds himself out of a job, and other incumbents in Harrisburg are left sweating over their political futures because of what pundits are calling a "populist insurrection." The anti-pay-raise movement that many had dismissed early on as a passing thunderstorm is developing into a Category 5 hurricane that threatens to uproot incumbents across the state next year. "Rome is burning, and the empire is crumbling," said State Rep. Thomas C. Petrone (D., Allegheny), who took the raise but later donated it to charities, including...