READING - The story of why a Democrat from Reading decided to back Republican Rep. John Perzel's desperate bid to remain House speaker goes no deeper than revenge, according to some Democrats. "It's personal, pure and simple," said State Rep. Dwight Evans (D., Phila.), explaining why a 30-year incumbent says he will turn his back on fellow Democrats, throw his lot in with the opposition, and help reelect Perzel today as speaker. Democratic State Rep. Thomas Caltagirone, 64, thought he deserved a leadership job after the November election gave the Democrats a 102-101 majority, according to Evans and Rep. Greg...