MONROEVILLE, PA.--With the war in Iraq, $3-a-gallon gas, and Jack Abramoff dogging Washington Republicans, it might seem a good bet for an ambitious Democrat like Chad Kluko to give up a six-figure salary and campaign for a seat in the House of Representatives. After all, he was a top executive at Verizon Wireless, started his own technology company, and makes a convincing case for bringing the lessons he's learned from business to bear on government. But Kluko was hardly the Democratic Party's first choice to run in Pennsylvania's 18th District, which fans out east and west from southern Pittsburgh. He...